CN106027219A

CN106027219A - Terminal apparatus, communication apparatus, communication method and integrated circuit

Info

Publication number: CN106027219A
Application number: CN201610591880.3A
Authority: CN
Inventors: 中尾正悟
Original assignee: Panasonic Intellectual Property Corp of America
Current assignee: Sun Patent Trust Inc
Priority date: 2010-09-03
Filing date: 2011-08-19
Publication date: 2016-10-12
Anticipated expiration: 2031-08-19
Also published as: JP2019208235A; US11729817B2; JP6168327B2; JP5820381B2; JP2016028507A; US20150296538A1; EP2613598A4; US10743342B2; US20230337275A1; US20190274161A1; EP2613598B1; JP2016208543A; US11337247B2; JP2019004524A; JP6422001B2; CN103081548B; JP6569119B2; EP3203677B1; CN106027219B; JP5995179B2

Abstract

Provided are a terminal apparatus, a communication apparatus, a communication method and an integrated circuit. The terminal apparatus includes: a receiving unit which receives downstream allocation control information signal channel of resource of downstream data distribuited to cellulars, and receives the downstream data; a generation unit generates a response signal of hte downstream data; and a sending unit sending the response signal. When the downstream allocation information is included in a first control signal channel that is sent on a control signal channel unit CCE in PDCCH region, a first resource determined by a first method sends the response signal, wherein the resource is determined by index of CCE in the PDCCH region, and when the downstream allocation information is included in a second control signal channel that is different from the first control signal channel, the response signal is sent through the second method which is different from the first method.

Description

Termination, communicator, communication means and integrated circuit

The application is the divisional application of following application for a patent for invention:

Application number: 201180041311.7

The applying date: on August 19th, 2011

Denomination of invention: terminal, base station and signal transmission control method

Technical field

The present invention relates to terminal, base station and signal transmission control method.

Background technology

In 3GPP LTE (third generation partner program Long Term Evolution), use OFDMA (Orthogonal Frequency Division Multiple Access, OFDM) as the communication mode of downlink.In application In the wireless communication system of 3GPP LTE, base station uses the communication resource set in advance to send synchronizing signal (Synchronization Channel:SCH) and broadcast singal (Broadcast Channel:BCH).Further, terminal is first First pass through capture SCH and guarantee synchronization with base station.Then, terminal obtains base station parameter alone by reading BCH information (such as bandwidth etc.) (with reference to non-patent literature 1,2,3).

It addition, terminal is after the acquisition completing base station parameter alone, base station is sent connection request, thus set up and base The communication stood.Via PDCCH, (Physical Downlink Control CHannel, physical down controls as required in base station Channel) send control information to the terminal of built vertical communication.

And, (descending distribution controls information: DL to the multiple control information comprised in the PDCCH signal that end-on receives Assignment.Otherwise referred to as Downlink Control Information (DCI).) carry out " blind judgement " respectively.That is, Control information comprises CRC (Cyclic Redundancy Check, cyclic redundancy check (CRC)) part, and this CRC part is led in a base station The Termination ID crossing sending object terminal shields.Therefore, terminal is attempted the control received at the Termination ID utilizing the machine Before the CRC part of information is demasked, it is impossible to determine whether to be destined for the control information of the machine.In this blind judgement, if The result demasked is CRC operation OK, then be judged to that this control information is destined for the machine.

It addition, in 3GPP LTE, be suitable for ARQ (Automatic for mailing to the down link data of terminal from base station Repeat Request, arq).That is, terminal would indicate that down link data error detection result response letter Number feed back to base station.Terminal carries out CRC to down link data, if CRC=OK (zero defect), by ACK (Acknowledgment, positive acknowledgment) feeds back to base station as response signal, if CRC=NG (having mistake), by NACK (Negative Acknowledgment, Negative Acknowledgement) feeds back to base station as response signal.This response signal (i.e. ACK/ NACK signal.Hereinafter be designated as " A/N " the most simply) feedback use PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel) etc. uplink control channel.

Here, comprise resource allocation information in the above-mentioned control information sent from base station, this resource allocation information comprises The base station resource information etc. to terminal distribution.As it has been described above, the transmission of this control information uses PDCCH.This PDCCH by one or Multiple L1/L2CCH (L1/L2Control Channel, L1/L2 control channel) are constituted.Each L1/L2CCH is by one or more CCE (Control Channel Element controls Channel Elements) is constituted.That is, CCE is by control information MAP to PDCCH Time ultimate unit.It addition, in the case of a L1/L2CCH is made up of multiple (2,4,8) CCE, this L1/L2CCH is divided It is equipped with the multiple CCE of the continuous print that CCE is starting point with even number Index (index).Base station is right for resource distribution as per advice As the CCE number needed for the control information of terminal, to this resource distribution object terminal distribution L1/L2CCH.And, base station will control Information MAP, in the physical resource corresponding with the CCE of this L1/L2CCH, is transmitted.

It addition, here, the composition resource of each CCE Yu PUCCH (following, to be sometimes referred to as PUCCH resource) is corresponding one to one Association.Therefore, receive the terminal of L1/L2CCH and determine and the composition resource of corresponding for the CCE PUCCH constituting this L1/L2CCH, This resource is used to send response signal to base station.But, in the case of L1/L2CCH occupies the multiple CCE of continuous print, terminal profit Constitute PUCCH corresponding for CCE minimum with Index (index) in resource with multiple PUCCH the most corresponding with multiple CCE to constitute Resource (that is, constitutes resource with the PUCCH corresponding for CCE of the CCE Index with even-numbered), sends response letter to base station Number.So, the communication resource of downlink can be used efficiently.

As it is shown in figure 1, the multiple response signals sent from multiple terminals are by having zero auto-correlation (Zero on a timeline Auto-correlation) ZAC (Zero Auto-correlation) sequence of characteristic, Walsh (Walsh) sequence and DFT (Discrete Fourier Transform, discrete Fourier transform (DFT)) sequence spreads, and carries out code multiple in PUCCH With.In FIG, (W₀, W₁, W₂, W₃) represent that sequence length is the walsh sequence of 4, (F₀, F₁, F₂) represent that sequence length is 3 DFT sequence.As it is shown in figure 1, in the terminal, the response signal of ACK or NACK the most on the frequency axis, by ZAC sequence (sequence A length of 12) frequency component corresponding with a SC-FDMA code element is once spread into.That is, to the ZAC sequence that sequence length is 12 Row are multiplied by the response component of signal of complex representation.Then, the response signal after once spreading and the ZAC as reference signal (sequence length is 4:W to sequence with walsh sequence₀～W₃.Otherwise referred to as walsh codes sequence (Walsh Code Sequence)), (sequence length is 3:F to DFT sequence₀～F₃) respectively correspondingly carry out secondary spread spectrum.That is, it is 12 to sequence length Signal (the once response signal after spread spectrum, or ZAC sequence (the Reference Signal as reference signal Sequence) each component), is multiplied by orthogonal code sequences (Orthogonal sequence: walsh sequence or DFT sequence Row) each component.And then, secondary spread spectrum after signal by IFFT (Inverse Fast Fourier Transform, quickly Inverse fourier transform) signal that sequence length is 12 that is transformed on time shaft.Then, the signal after IFFT is added respectively CP, forms the signal of the time slot being made up of seven SC-FDMA code elements.

Response signal from different terminals uses and different cyclic shift amounts (Cyclic shift Index) each other Corresponding ZAC sequence or ((orthogonal covering refers to Orthogonal Cover Index:OC index from different sequence numberings Number)) corresponding orthogonal code sequence spreads.Orthogonal code sequence is the group of walsh sequence and DFT sequence.It addition, orthogonal code Sequence is otherwise referred to as piecemeal spread spectrum code sequence (Block-wise spreading code).Therefore, base station is by carrying out in the past Despreading and relevant treatment, it is possible to separate these multiple response signals having carried out code multiplexing (with reference to non-patent literature 4).

But, each terminal carries out blind judgement to the descending distribution control signal mailing to this device in each subframe, therefore exists End side is not necessarily properly received descending distribution control signal.In terminal to this device that mails in certain descending per unit band In the case of the reception failure of descending distribution control signal, whether terminal is even connected in this descending per unit band to exist and mails to this The down link data of device all cannot be known.Therefore, to the descending distribution control signal in certain descending per unit band In the case of reception failure, terminal does not the most generate the response signal for the down link data in this descending per unit band.Should Error situation is defined as the DTX (DTX of the response signal in the sense that end side does not carry out responding the transmission of signal (Discontinuous transmission) of ACK/NACK signals, the discontinuous transmission of ack/nack signal).

It addition, in 3GPP LTE system (following, be sometimes referred to as " LTE system "), base station to uplink data and Down link data separately carries out resource distribution.Therefore, in LTE system, in the uplink, there is terminal (i.e. The terminal (hereinafter referred to as " LTE terminal ") corresponding with LTE system) the response signal for down link data must be sent simultaneously Situation with uplink data.In this case, up-link uses time-multiplexed (Time Division Multiplexing:TDM) response signal and the uplink data of self terminal are sent.By so using TDM to send out simultaneously Send response signal and uplink data, maintain single-carrier property (the Single carrier sending waveform of terminal properties)。

It addition, as in figure 2 it is shown, in time-multiplexed (TDM), the response signal (" A/N ") sent from terminal occupies upper (PUSCH (Physical Uplink Shared CHannel, Physical Uplink Shared Channel) provides the resource of uplink data distribution Source) a part (with the adjacent SC-FDMA code of SC-FDMA code element mapping reference signal (RS (Reference Signal)) A part for unit) sent to base station." subcarrier (Subcarrier) " of the longitudinal axis in figure is otherwise referred to as " virtual subnet carrier wave (Virtual subcarrier) " or " time-continuous signal (Time contiguous signal) ", for convenience by SC- In FDMA transmitter converge be input to DFT (Discrete Fourier Transform, discrete Fourier transform (DFT)) circuit " time Continuous print signal between " it is expressed as " subcarrier ".That is, in PUSCH resource, by response signal in uplink data Arbitrary data carry out punch (puncture).Therefore, any bit of the uplink data after coding is punched, by The quality (such as coding gain) of this uplink data significantly deteriorates.Therefore, base station is such as by the lowest to terminal instruction Encoding rate, or the biggest transmit power of instruction, punching the quality deterioration of the uplink data caused is mended Repay.

It addition, be used for having realized the standardization of the 3GPP LTE-Advanced of communication speed more faster than 3GPP LTE already Start.3GPP LTE-Advanced system (following, to be sometimes referred to as " lte-a system ") follows 3GPP LTE system (below, to be had Time be referred to as " LTE system ").In 3GPP LTE-Advanced, in order to realize the downlink transfer speed of maximum more than 1Gbps, in advance Meter will import the base station and terminal that can communicate with the wideband frequency of more than 40MHz.

In lte-a system, in order to realize transmitting speed based on the ultrahigh speed times over the transmission speed in LTE system simultaneously The communication of degree and for the backward compatibility (Backward Compatibility) of LTE system, will be towards lte-a system Frequency band be divided into " per unit band " of below 20MHz supporting bandwidth as LTE system.I.e., here, " per unit band " is tool There is the frequency band of maximum 20MHz width, be defined as the ultimate unit of communication band.Further, " per unit band " in downlink (hereinafter referred to as " descending per unit band ") is also sometimes defined as being divided by the downstream bands information in the BCH notified from base station Frequency band or by down control channel (PDCCH) be distributed when frequency domain dispersion width definition frequency band.It addition, it is up " per unit band " (hereinafter referred to as " up per unit band ") in link is also sometimes defined as by the BCH notified from base station Upstream band information divide frequency band or immediate vicinity comprise PUSCH (Physical Uplink Shared CHannel, Physical Uplink Shared Channel) and the ultimate unit of 20MHz communication below frequency band of the PUCCH towards LTE is comprised at both ends. It addition, " per unit band " in 3GPP LTE-Advanced sometimes with English be recited as Component Carrier (s) or Cell。

Further, in lte-a system, support to use the communication of frequency band of these per unit band several binding, i.e. institute The carrier aggregation (Carrier aggregation) of meaning.Further, typically, for up throughput demands with for descending Throughput demands different, therefore in lte-a system, the most studying for the terminal the most corresponding with lte-a system The quantity of the per unit band that (hereinafter referred to as " LTE-A terminal ") sets is in up and descending middle different carrier aggregation, i.e. so-called Asymmetric carrier aggregation (Asymmetric Carrier aggregation).Further, also support at up and descending middle list The situation that position asymmetric and constituent parts frequency band the bandwidth of frequency band number is respectively different.

Fig. 3 is the asymmetrical carrier aggregation for explanation application in individual other terminal and the figure of control sequential thereof.? In Fig. 3, it is shown that up Yu the descending bandwidth of base station and the example of per unit band number symmetry.

In figure 3, for terminal 1, carry out using two descending per unit band to enter with left side up per unit band The setting (Configuration) of row carrier aggregation, on the other hand, for terminal 2, carries out using two identical with terminal 1 The setting of descending per unit band, but in uplink communication, utilize on the right side of the setting of up per unit band.

Further, when being conceived to terminal 1, constitute between LTE-A base station and the LTE-A terminal of lte-a system according to Fig. 3 (a) Shown sequential chart, carries out the transmitting-receiving of signal.As shown in Fig. 3 (a), (1) terminal 1 is when starting to communicate with base station, with left side Descending per unit band obtains synchronization, from referred to as SIB2 (System Information Block Type 2, system information block class Type 2) notification signal in read the information of the up per unit band paired with the descending per unit band in left side.(2) terminal 1 uses This up per unit band, such as, send connection request, thus start the communication with base station to base station.(3) be judged as needing right In the case of the multiple descending per unit band of terminal distribution, base station instruction terminal adds descending per unit band.But, in this situation Under, up per unit band number will not increase, and starts asymmetric carrier aggregation in as the terminal 1 of individual terminal.

It addition, in the LTE-A applying above-mentioned carrier aggregation, terminal once receives in multiple descending per unit band sometimes Multiple down link datas.In LTE-A, as the sender of the multiple response signals for the plurality of down link data Method, is studying Channel assignment (Channel Selection, also referred to as Multiplexing (multiplexing)), Bundling (bundle Tie up) and DFT-S-OFDM (Discrete Fourier Transform spread Orthogonal Frequency Division Multiplexing, discrete Fourier transform (DFT)-spread spectrum-OFDM) form.In Channel assignment, root According to the pattern of the error detection result about multiple down link datas, the code element point not only making response signal use becomes Change, also make the resource of mapping response signal change.On the other hand, in binding (Bundling), to according to about multiple ACK that the error detection result of down link data generates or NACK signal carry out bundling (Bundling) (that is, make ACK=1, NACK=0, calculates the logic product (Logical AND) of the error detection result about multiple down link datas), use in advance The resource determined sends response signal.It addition, when using DFT-S-OFDM form to send, terminal converges under multiple The response signal of uplink data also carries out encoding (Joint coding, combined coding), uses this form to send this coded number According to (with reference to non-patent literature 5).

I.e., as shown in Figure 4, Channel assignment is based on for the multiple descending chain received by multiple descending per unit band The response signal of circuit-switched data is ACK or NACK respectively, not only makes phase point (that is, the Constellation of response signal Point) change, also make response signal send the method that the resource used changes.On the other hand, binding (Bundling) it is the ack/nack signal for multiple down link datas to be tied to a signal, from predetermined one The method (with reference to non-patent literature 6,7) that individual resource is transmitted.

Here, quote when above-mentioned asymmetrical carrier aggregation is applied to terminal by Fig. 4 explanation based on Channel assignment and The ARQ of Bundling controls.

Such as, as shown in Figure 4, it is made up of descending per unit band 1,2 and up per unit band 1 terminal 1 is set In the case of per unit band group (being sometimes recited as " Component Carrier set " with English), by descending unit frequency Band 1,2 respective PDCCH distribute information after base station is sent to terminal 1 by downlink resource, utilizes and this downlink resource distribution letter The resource that breath is corresponding sends down link data.

Further, in Channel assignment, descending in the receiving successfully of the downlink data in per unit band 1, per unit band 2 The situation of the reception failure of data (that is, the response signal of per unit band 1 be ACK, the response signal of per unit band 2 be NACK's Situation) under, in the PUCCH resource that response signal comprises in being mapped to PUCCH region 1, and as the phase place of this response signal Point, and use the 1st phase point (such as, the phase point of (1,0) etc.).It addition, the reception of the downlink data in per unit band 1 becomes The reception of the downlink data in merit and per unit band 2 also successfully in the case of, response signal is mapped to bag in PUCCH region 2 In the PUCCH resource contained, and use the 1st phase point.That is, in the case of descending per unit band is two, error detection result Pattern be four kinds of patterns, therefore by the combination of two resources with two kinds of phase points, it is possible to represent these four pattern.

On the other hand, in binding (Bundling), the feelings of two down link data both sides it have been properly received in terminal 1 Under condition (CRC=OK), terminal 1 calculate the ACK (=1) for descending per unit band 1 with for descending per unit band 2 ACK (= 1) logic product, is sent to base station using " 1 " (i.e. the ACK) as its result as binding ack/nack signal.It addition, in terminal The reception success of the down link data in 1 pair of descending per unit band 1, and to the downlink number in descending per unit band 2 According to reception failure in the case of, terminal 1 calculate ACK (=1) for descending per unit band with for descending per unit band 2 The logic product of NACK (=0), is sent to base station by " 0 " (i.e. NACK) as binding ack/nack signal.Equally, right in terminal 1 In the case of the reception of two down link datas all failures, terminal 1 calculates the logic product of NACK (=0) and NACK (=0), will " 0 " (i.e. NACK) feeds back to base station as binding ack/nack signal.

So, in binding (Bundling), only all it is properly received at multiple down link datas that terminal is sent In the case of, ACK is sent to base station, even if there being a descending chain as a unique binding ack/nack signal by terminal In the case of circuit-switched data reception failure, also base station is sent by NACK as a unique binding ack/nack signal.Accordingly, The expense in ascending control channel can be cut down.Additionally, in end side, use and occupied with the multiple downgoing control signals received Each corresponding for multiple CCE PUCCH resource in, the PUCCH resource that such as frequency or identiflication number (Index) are minimum, send Binding ack/nack signal.

Then, the method that Fig. 5 illustrates to use DFT-S-OFDM form to send binding ack/nack signal is used.Using That DFT-S-OFDM form sends, converge for the response signal of multiple down link datas carry out encoding (Joint coding, Combined coding) obtained by coded data, comprise the error detection result of each descending per unit band respectively as independent data. This convergence carries out encoding (Joint coding) and comprising each descending respectively for the response signal of multiple down link datas The coded data of the error detection result of per unit band hereinafter referred to as " binding ack/nack signal " or " binding response signal ".

As the reference signal for demodulating binding ack/nack signal, use " the sequence identical with the reference signal in LTE Arrange the ZAC sequence (Base sequence, basic sequence) of a length of 12 ".Specifically, sequence length is the ZAC sequence configuration of 12 In the 2nd, 6 SC-FDMA code elements, (sequence length is 2:W ' with Walsh sequence₀, W '₁) respectively correspondingly spread.Enter And, the signal that the signal spread is transformed on time shaft by IFFT.These process are equivalent to utilize IFFT by ZAC sequence After rank transformation is the signal on time shaft, spread by the Walsh sequence that sequence length is 2.

Identical with the reference signal for ACK/NACK in LTE, the reference signal from different terminals is used and that Sequence or Walsh sequence different from each other that this different cyclic shift amount (Cyclic shift Index) is corresponding are expanded Frequently, in a base station, by using conventional despreading process and relevant treatment, it is possible to separate these and carried out the multiple of code multiplexing Reference signal.

In the DFT-S-OFDM form shown in Fig. 5, as mentioned earlier, as reference signal uses, " sequence length is 12 ZAC sequence ".In the case, first the signal being made up of 12 code elements as binding ack/nack signal is carried out DFT, It is done only once spread spectrum in a SC-FDMA code element.As it was previously stated, in LTE system, carried out a code of BPSK modulation The response signal of unit is done only once in a SC-FDMA code element by ZAC sequence (sequence length is 12) on the frequency axis Spread spectrum.On the other hand, in the lte-a system of application carrier aggregation, using DFT-S-OFDMA notice binding ACK/NACK letter In the case of number, using as reference signal time the ZAC sequence of 12 " sequence length be ", the binding being made up of 12 code elements Ack/nack signal is carried out DFT, is done only once spread spectrum in a SC-FDMA code element.Additionally, as it was previously stated, by 12 In the binding ack/nack signal that individual code element is constituted, comprise the mistake inspection of each descending per unit band respectively as independent data Survey result.

Then, the binding ack/nack signal after carrying out DFT is configured at the 1st, 3,4,5,7 SC-FDMA code elements, and (sequence length is 5:F ' with DFT sequence respectively₀, F '₁, F '₂, F '₃, F '₄) corresponding and spread.And then, carry out spread spectrum The signal that signal is transformed on time shaft by IFFT.These process the signal being equivalent to utilize IFFT to be transformed on time shaft After, what signal was multiplied by the DFT sequence that sequence length is 5 respectively wants prime component.

Here, by using DFT sequence different from each other that binding ack/nack signal is spread, and will be from difference The binding ack/nack signal of terminal carries out a yard multiplexing.That is, owing to the DFT sequence utilizing sequence length to be 5 is to binding ACK/ NACK signal spreads, so being at best able to the binding ack/nack signal from five terminals is carried out a yard multiplexing each other.

Then, CP the most additional to the signal after IFFT (Cyclic Prefix, Cyclic Prefix), formed by seven SC- The signal of the time slot that FDMA code element is constituted.

After, the resource using DFT-S-OFDM format structure to send binding ack/nack signal is referred to as " binding ACK/ NACK resource ".As it is shown in figure 5, in the case of using DFT-S-OFDM form to send down link data, bundle ACK/NACK Signal is configured at the data division of configurating downlink link data and (in the example of fig. 5, is the 1st, 3,4,5,7 SC-FDMA codes Unit).And, carry out time-multiplexed for demodulating the reference signal of binding ack/nack signal with binding ack/nack signal.

Additionally, in LTE-A, in order to realize the expansion of the area of coverage, also specify wireless communications relay device (hereinafter referred to as " relay station " or " RN:Relay Node ") importing (with reference to Fig. 6).Accompany with this, carrying out with from base station to relay station The standardization (referring for example to non-patent literature 8,9,10,11) that downlink control channel (hereinafter referred to as " R-PDCCH ") is relevant. In the current stage, about R-PDCCH, studying following item.One example of R-PDCCH region shown in Fig. 7.

(1) starting position that maps of the time-axis direction of R-PDCCH is fixed to the front end of a subframe and plays the 4th OFDM symbol.It does not relies on PDCCH in the ratio shared by time-axis direction.

(2) as the axial mapping method of frequency of R-PDCCH, distributed (distributed) and local formula are supported (localized) both collocation methods.

(3) reference signal called as solution, supports CRS (Common Reference Signal, public reference signal) With DM-RS (Demodulation Reference Signal, demodulated reference signal).About using which kind of reference signal, from base Stand and notify to relay station.

Prior art literature

Non-patent literature

Non-patent literature 1:3GPP TS 36.211V9.1.0, " Physical Channels and Modulation (Release 9),”May 2010

Non-patent literature 2:3GPP TS 36.212V9.2.0, " Multiplexing and channel coding (Release 9),”June 2010

Non-patent literature 3:3GPP TS 36.213V9.2.0, " Physical layer procedures (Release 9),”June 2010

Non-patent literature 4:Seigo Nakao, Tomofumi Takata, Daichi Imamura, and Katsuhiko Hiramatsu,“Performance enhancement of E-UTRA uplink control channel in fast fading environments,”Proceeding of IEEE VTC 2009spring,April.2009

Non-patent literature 5:Ericsson and ST-Ericsson, " A/N transmission in the uplink for carrier aggregation,”R1-100909,3GPP TSG-RAN WG1#60,Feb.2010

Non-patent literature 6:ZTE, 3GPP RAN1meeting#57, R1-091702, " Uplink Control Channel Design for LTE-Advanced,”May 2009

Non-patent literature 7:Panasonic, 3GPP RAN1meeting#57, R1-091744, " UL ACK/NACK transmission on PUCCH for Carrier aggregation,”May 2009

Non-patent literature 8:3GPP TSG RAN WG1meeting, R1-102700, " Backhaul Control Channel Design in Downlink,”May 2010

Non-patent literature 9:3GPP TSG RAN WG1meeting, R1-102881, " R-PDCCH placement, " May 2010

Non-patent literature 10:3GPP TSG RAN WG1meeting, R1-103040, " R-PDCCH search space design”May 2010

Non-patent literature 11:3GPP TSG RAN WG1meeting, R1-103062, " Supporting frequency diversity and frequency selective R-PDCCH transmissions”May 2010

Summary of the invention

The problem that invention is to be solved

In addition, it is contemplated that map resource area (hereinafter referred to as " the PDCCH district of the PDCCH of the terminal towards base station subordinate Territory ") the situation of inadequate resource.As the method eliminating this inadequate resource, it is considered to descending by the terminal towards base station subordinate Distribution control information (DCI) is also configured at the resource area (hereinafter referred to as " R-PDCCH region ") mapping above-mentioned R-PDCCH (with reference to Fig. 8).Actually it is used for sending DCI about R-PDCCH region, is still used for sending common down link data, By the scheduling of base station, each subframe is determined.

Even if here, receive descending distribution control information in terminal via R-PDCCH, and have received down link data In the case of, also apply above-mentioned ARQ.But, about the sending method of response signal in this case, it is not sufficiently carried out Research.

It is an object of the invention to provide in the case of terminal have received descending distribution control information via R-PDCCH, The response terminal of signal, base station and signal control method can be efficiently sent.

The scheme of solution problem

One embodiment of the invention provides termination, including: receive unit, receive and include indicating under the distribution of community The control channel of the descending distribution information of the resource of row data, and receive described downlink data；Signal generating unit, generates for institute State the response signal of downlink data；And transmitting element, send described response signal；Wherein, when described descending distribution information quilt When being contained on the control Channel Elements CCE in physical downlink control channel PDCCH region in the first control channel sent, make Sending described response signal with the first resource determined by first method, wherein the index from the CCE of described PDCCH region is true Determine resource；When described descending distribution information is contained in the second control channel different from described first control channel, make Described response signal is sent with the Secondary resource determined by the second method different from described first method.

Another embodiment of the present invention provides communicator, including: transmitting element, send to terminal and include that instruction is to community The control channel of the descending distribution information of the resource of the downlink data of distribution, and described downlink data was sent to described end End；And reception unit, receiving the response signal for described downlink data, described response signal is to send from described terminal 's；Wherein, it is contained in the control Channel Elements in physical downlink control channel PDCCH region when described descending distribution information Time in upper the first control channel sent of CCE, the first resource determined by first method is used to send described response signal, its In determine resource from the index of the CCE of described PDCCH region；Control with described first when described descending distribution information is contained in Time in the second control channel that channel is different, use the Secondary resource determined by the second method different from described first method Send described response signal.

Another embodiment of the present invention provides communication means, comprises the following steps: receives and includes indicating community distribution The step controlling channel of the descending distribution information of the resource of downlink data；Receive the step of described downlink data；Generate for The step of the response signal of described downlink data；And send the step of described response signal；Wherein, when described descending distribution letter Breath is contained on the control Channel Elements CCE in physical downlink control channel PDCCH region in the first control channel sent Time, use the first resource determined by first method to send described response signal, wherein from the CCE's of described PDCCH region Index determines resource；Control from described first in the second control channel that channel is different when described descending distribution information is contained in Time, use the Secondary resource determined by the second method different from described first method to send described response signal.

Another embodiment of the present invention provides communication means, comprises the following steps: sends to terminal and includes that instruction is to community The step controlling channel of the descending distribution information of the resource of the downlink data of distribution；Described downlink data was sent to described end The step of end；And receiving the step described downlink data being responded to signal, described response signal is to send out from described terminal Send；Wherein, it is contained in the control Channel Elements in physical downlink control channel PDCCH region when described descending distribution information Time in upper the first control channel sent of CCE, the first resource determined by first method is used to send described response signal, its In determine resource from the index of the CCE of described PDCCH region；Control with described first when described descending distribution information is contained in Time in the second control channel that channel is different, use the Secondary resource determined by the second method different from described first method Send described response signal.

Another embodiment of the present invention provides integrated circuit, is used for controlling following process: receive and include that instruction is to little differentiation The control channel of the descending distribution information of the resource of the downlink data joined；Receive described downlink data；Generate for described descending The response signal of data；Send described response signal；Wherein, it is contained in physical down control when described descending distribution information Time in the first control channel sent on the control Channel Elements CCE of channel PDCCH region, use is determined by first method First resource sends described response signal, and wherein the index from the CCE of described PDCCH region determines resource；When described descending point Join information be contained in from described first control channel different second control channel in time, use by with described first method The Secondary resource that different second methods determines sends described response signal.

Another embodiment of the present invention provides integrated circuit, is used for controlling following process: send to terminal include indicating right The control channel of the descending distribution information of the resource of the downlink data of community distribution；Described downlink data was sent to described end End；And receiving the response signal for described downlink data, described response signal sends from described terminal；Wherein, when Described descending distribution information is contained on the control Channel Elements CCE in physical downlink control channel PDCCH region transmission Time in first control channel, the first resource determined by first method is used to send described response signal, wherein from described The index of the CCE of PDCCH region determines resource；When described descending distribution information is contained in different from described first control channel The second control channel in time, use the Secondary resource determined by the second method different from described first method to send described Response signal.

The terminal of one form of the present invention uses following structure, including: receive unit, by by with ascending control channel Resource establishes the first down control channel that one or more control Channel Elements (CCE) of association send and with described Any one in the second down control channel that first down control channel is different receives Downlink Control Information, and is believed by data Road receives data；Signal generating unit, the presence or absence of mistakes based on described data, generate the response signal for described data；And Control unit, have received institute according to by which one in described first down control channel or described second down control channel State Downlink Control Information, from establishing the resource associated with described CCE and from the specific resources of base station notice, select to be used for Send the resource of the described ascending control channel of described response signal, control the transmission of described response signal.

The base station of one form of the present invention uses following structure, including transmitting element, by by with ascending control channel Resource establishes the first down control channel that one or more control Channel Elements (CCE) of association send and with described Any one in the second down control channel that first down control channel is different sends Downlink Control Information, and is believed by data Road sends data；And reception unit, according to described transmitting element passes through described first down control channel or described second Which one in down control channel have sent described Downlink Control Information, from establish with described CCE the resource associated and In the specific resources that terminal notification is crossed, select described terminal used in the transmission for the response signal of described data Resource, receive described response signal by selected described resource.

The signal transmission control method of one form of the present invention, including: established by the resource with ascending control channel Appointing in the first down control channel of association and the second down control channel different from described first down control channel One receives Downlink Control Information, and by data channel reception data；The presence or absence of mistakes based on described data, generate for The response signal of described data；And according to by described first down control channel or described second down control channel Which one have received described Downlink Control Information, from establishing the resource associated and specific from base station notice with described CCE In resource, select the resource being used for sending the described ascending control channel of described response signal, control sending out of described response signal Send.

The effect of invention

According to the present invention, in the case of terminal have received descending distribution control information via R-PDCCH, it is possible to efficiently Send response signal.

Accompanying drawing explanation

Fig. 1 is the figure of the spectrum spreading method representing response signal and reference signal.

Fig. 2 is to represent the action relevant with the response signal in PUSCH resource and the TDM application of uplink data Figure.

When Fig. 3 (a) and Fig. 3 (b) is the asymmetric carrier aggregation applied in individual other terminal for explanation and control thereof The figure of sequence.

Fig. 4 is the asymmetric carrier aggregation for explanation application in individual other terminal and the figure of control sequential thereof.

Fig. 5 is the figure that the ARQ in time illustrating that carrier aggregation is applied to terminal controls.

Fig. 6 is the figure of the communication system comprising wireless communications relay device for explanation.

Fig. 7 is the figure of the example representing R-PDCCH region.

Fig. 8 is the figure of the mapping example for PDCCH is described.

Fig. 9 is the block diagram of the primary structure of the base station representing embodiments of the present invention 1.

Figure 10 is the block diagram of the primary structure of the terminal representing embodiments of the present invention 1.

Figure 11 is the block diagram of the structure of the base station representing embodiments of the present invention 1.

Figure 12 is the block diagram of the structure of the terminal representing embodiments of the present invention 1.

Figure 13 A and Figure 13 B is the control example 1 of the A/N resource of embodiments of the present invention 1.

Figure 14 A is the control example 2 of the response signal transmission of embodiments of the present invention 1.

Figure 14 B is the control example 2 of the response signal transmission of embodiments of the present invention 1.

Figure 15 A is the control example 3 of the response signal transmission of embodiments of the present invention 1.

Figure 15 B is the control example 3 of the response signal transmission of embodiments of the present invention 1.

Figure 15 C is the control example 3 of the response signal transmission of embodiments of the present invention 1.

Figure 15 D is the control example 3 of the response signal transmission of embodiments of the present invention 1.

Figure 16 A is the control example 4 of the response signal transmission of embodiments of the present invention 1.

Figure 16 B is the control example 4 of the response signal transmission of embodiments of the present invention 1.

Figure 16 C is the control example 4 of the response signal transmission of embodiments of the present invention 1.

Figure 16 D is the control example 4 of the response signal transmission of embodiments of the present invention 1.

Figure 17 is the block diagram of the structure of the terminal representing embodiments of the present invention 2.

Figure 18 A and Figure 18 B is the control example of the response signal transmission of embodiments of the present invention 2.

Symbol description

100 base stations

101,208 control unit

102 control information generating unit

103 coding units

104 modulating units

105 coding units

106 data send control unit

107 modulating units

108,404 map unit

109,218-1,218-2,218-3,405IFFT unit

110,219-1,219-2,219-3,406CP extra cell

111,222 wireless transmission unit

112,201 radio receiving unit

113,202CP removing unit

114 PUCCH extraction units

115 despread unit

116 sequence control unit

117 dependent processing unit

118 A/N identifying units

119 binding A/N despread unit

120 IDFT unit

121 binding A/N identifying units

122 retransmit control signal signal generating unit

200,400 terminals

203 FFT unit

204 extraction units

205,209 demodulating unit

206,210 decoding unit

207 identifying units

211 CRC unit

212 response signal signal generating units

213,401 coding and modulating unit

Spectrum-spreading unit of 214-1,214-2

Bis-spectrum-spreading units of 215-1,215-2

216,403 DFT unit

217 spectrum-spreading units

220 time-multiplexed unit

221,407 unit is selected

402 perforation units

Detailed description of the invention

Hereinafter, embodiments of the present invention are described in detail with reference to accompanying drawings.It addition, in embodiments, to identical knot Structure key element adds identical label, and its explanation is omitted due to repetition.

First, before the concrete structure that each embodiment is described and action, have received via R-PDCCH as terminal In the case of descending distribution control information, send the side of response signal (up response signal) for down link data Method, illustrates the method that the present inventors is had in mind.

Here, receive descending distribution control information as terminal via R-PDCCH and have received the feelings of down link data The sending method of response signal under condition, in up-link, it is considered to two kinds of following methods.

A kind of method is, same with being associated of PUCCH resource with the CCE shared by the PDCCH in LTE, use and R- R-CCE (Relay-Control Channel Element, relaying-control Channel Elements) shared by PDCCH is one to one The PUCCH resource setting up association sends the method for response signal (Implicit signalling implies signaling) (method 1). That is, in the case of the DCI of the terminal towards base station subordinate is configured at R-PDCCH region, as each R-PDCCH with PDCCH, Take the resource being made up of the multiple R-CCE of or continuous print.It addition, R-CCE number (the R-CCE polymerization taken as R-PDCCH Number: Relay CCE aggregation level, the grade of relaying CCE polymerization), such as according to the information of distribution control information The propagation path state of bit number or terminal, selects in 1,2,4,8.

Another kind of method be in advance from base station to terminal notification for the method (Explicit of the resource of PUCCH Signalling, expresses signaling) (method 2).That is, in method 2, terminal uses the PUCCH resource notified from base station in advance to send out Send response signal.

By using method 1 or method 2, even if having received the feelings of descending distribution control information in terminal via R-PDCCH It also is able under condition send the response signal for down link data.

But, in method 1, need the whole R-CCE being distributed in downstream bands to be built single PUCCH in advance Vertical association, the expense of PUCCH resource becomes problem.Additionally, as it was previously stated, R-PDCCH is to face in the case of PDCCH resource anxiety Time use resource area.Therefore, R-PDCCH region might not be used for the transmission of DCI all the time, thus likely when certain Between carry in (certain subframe) and establish, with R-CCE, the most of PUCCH resource associated and be wasted.

It addition, in method 2, it is necessary to the whole terminals being possibly used R-PDCCH transmission DCI are prenoticed individually PUCCH resource.Thus, in method 2, the expense of PUCCH also becomes problem.

Therefore, following description is in the case of terminal have received descending distribution control information via R-PDCCH, it is possible to as far as possible Reduce send for needed for the response signal of down link data (it is ensured that) the terminal of PUCCH, base station and signal send Control method.

(embodiment 1)

Fig. 9 is the primary structure figure of the base station 100 of embodiments of the present invention 1.In base station 100, map unit 108 will DCI (Downlink Control Information) is mapped to and is established, by the resource with PUCCH (ascending control channel), the one or more CCE associated In the PDCCH (the first down control channel) sent and the R-PDCCH (the second down control channel) different from PDCCH In any one, and map the data in PDSCH (data channel).Accordingly, by any one in PDCCH and R-PDCCH Send DCI (Downlink Control Information), send data by PDSCH.PUCCH extraction unit 114 passes through according in map unit 108 Which one in PDCCH (down control channel) or R-PDCCH (the second down control channel) have sent DCI, and (descending control is believed Breath), from establishing the resource associated and the specific resources that terminal 200 was notified with CCE, select in terminal 200 at pin Data are responded used resource in the transmission of signal, selected resource is extracted response signal.Accordingly, pin is received Response signal to data.

Figure 10 is the primary structure figure of the terminal 200 of embodiments of the present invention 1.In terminal 200, extraction unit 204 By establishing the PDCCH that one or more CCE of associating send with the resource of PUCCH (ascending control channel), (first is descending Control channel) and the R-PDCCH (second down control channel) different from PDCCH in any one in extract DCI (descending Control information), and in PDSCH (data channel), extract data.Accordingly, connect by any one in PDCCH and R-PDCCH Receive DCI, receive data by PDSCH.Response signal signal generating unit 212 presence or absence based on data error, generates for data Response signal.Control unit 208 uses PUCCH (ascending control channel) to control the transmission of response signal.Now, control unit 208 according to by which one in PDCCH (the first down control channel) or R-PDCCH (the second down control channel) have received DCI (Downlink Control Information), from establishing the resource associated with CCE and from the specific resources that base station 100 notified, selects For sending the resource of the PUCCH (ascending control channel) of response signal, control the transmission of response signal.

(structure of base station)

Figure 11 is the block diagram of the structure of the base station 100 representing present embodiment.In fig. 11, base station 100 has control Unit 101, control information generating unit 102, coding unit 103, modulating unit 104, coding unit 105, data send and control Unit 106, modulating unit 107, map unit 108, IFFT (Inverse Fast Fourier Transform, quick Fourier Leaf inverse transformation) unit 109, CP extra cell 110, wireless transmission unit 111, radio receiving unit 112, CP removing unit 113, PUCCH extraction unit 114, despread unit 115, sequence control unit 116, dependent processing unit 117, A/N identifying unit 118, Binding A/N despread unit 119, IDFT (Inverse Discrete Fourier Transform, inverse discrete Fourier transformer inverse-discrete) Unit 120, binding A/N identifying unit 121 and repeating transmission control signal signal generating unit 122.

Control unit 101 is to resource distribution object terminal (hereinafter referred to as " destination's terminal ", or be simply referred as " eventually End ") 200 distribution (Assign) are for sending the downlink resource (that is, Downlink Control Information Resources allocation) of control information, Yi Jiyong In the downlink resource (that is, downlink data Resources allocation) sending down link data.The distribution of this resource is right to resource distribution As what the descending per unit band that the per unit band group of terminal 200 setting is comprised was carried out.It addition, Downlink Control Information distribution money Source is to select in the resource corresponding with the down control channel (PDCCH or R-PDCCH) in each descending per unit band.Separately Outward, downlink data Resources allocation is to select in the resource corresponding with the downstream data channel (PDSCH) in each descending per unit band Select.But, the part or all of overlap of the resource the most corresponding with PDSCH and R-PDCCH, base station 100 can be by unused Resource in R-PDCCH is diverted to PDSCH.It addition, in the case of there is multiple resource distribution object terminal 200, control single Unit 101 each distributes different resources to resource distribution object terminal 200.

Downlink Control Information Resources allocation is equal to above-mentioned L1/L2CCH.That is, Downlink Control Information Resources allocation is by one Individual or multiple CCE (or R-CCE.Hereinafter, sometimes do not differentiate between CCE and R-CCE, be simply referred as CCE) constitute.

It addition, control unit 101 determines the coding used when sending control information to resource distribution object terminal 200 Rate.The data volume of control information is different according to this encoding rate, control unit 101 distribution have and can map this data volume The Downlink Control Information Resources allocation of the CCE of the quantity of control information.

And, control unit 101 is to controlling the letter that information generating unit 102 output is relevant to downlink data Resources allocation Breath.It addition, control unit 101 exports the information relevant to encoding rate to coding unit 103.It addition, control unit 101 determines to send out Sending the encoding rate of data (that is, down link data), output is to coding unit 105.It addition, control unit 101 is to map unit The information that 108 outputs are relevant to downlink data Resources allocation and Downlink Control Information Resources allocation.Wherein, control unit 101 It is controlled, so that down link data is mapped to same descending unit with the Downlink Control Information for this down link data In frequency band.

Control information generating unit 102 and generate the control information comprising the information relevant to downlink data Resources allocation, will Its output is to coding unit 103.This control information is generated by each descending per unit band.It addition, there is multiple resource In the case of distribution object terminal 200, in order to distinguish resource distribution object terminal 200 each other, and comprise mesh in the control information The Termination ID of ground terminal 200.Such as, control information comprises the CRC ratio utilizing the Termination ID of destination's terminal 200 to shield Special.This control information is sometimes referred to as " descending distribution control information (Control information carrying Downlink assignment) " or " Downlink Control Information (DCI), Downlink Control Information ".

Control information, according to the encoding rate obtained from control unit 101, is encoded by coding unit 103, after encoding Control information export to modulating unit 104.

Control information after coding is modulated by modulating unit 104, exports the modulated signal obtained to map unit 108。

Coding unit 105 is by the transmission data (that is, down link data) of each destination terminal 200 and from control The code rate information of unit 101, as input, encodes sending data, exports to data transmission control unit 106.But It is, in the case of destination's terminal 200 is assigned with multiple descending per unit band, to sent by each descending per unit band Send data to encode respectively, the transmission data output after coding is sent control unit 106 to data.

Data transmission control unit 106, when sending for the first time, keeps the transmission data after coding, and exports to modulating list Unit 107.The transmission data after coding are kept by each destination terminal 200.It addition, send to destination's terminal 200 Transmission data be by send each descending per unit band keep.Thus, can not only carry out to destination's terminal 200 The repeating transmission control that the data sent are overall, moreover it is possible to carry out the repeating transmission to each descending per unit band and control.

It addition, data send control unit 106 under obtaining for by certain from repeating transmission control signal signal generating unit 122 During NACK or DTX of the down link data that row per unit band is transmitted across, by the holding number corresponding with this descending per unit band According to output to modulating unit 107.Data send control unit 106 and are obtaining for logical from repeating transmission control signal signal generating unit 122 When crossing the ACK of the down link data that certain descending per unit band is transmitted across, delete the holding corresponding with this descending per unit band Data.

Transmission data after sending, from data, the coding that control unit 106 obtains are modulated by modulating unit 107, will adjust Signal processed exports to map unit 108.

The modulated signal of the control information obtained from modulating unit 104 is mapped to from control unit 101 by map unit 108 In the resource shown in Downlink Control Information Resources allocation obtained, output is to IFFT unit 109.Now, map unit 108 will be from The control information (DCI) that modulating unit 104 obtains is mapped in any one in PDCCH and R-PDCCH.

It addition, the modulated signal of the transmission data obtained from modulating unit 107 is mapped to from controlling single by map unit 108 The resource shown in downlink data Resources allocation (that is, the information that control information comprises) that unit 101 obtains ((believe PDSCH by downlink data Road)) in, output is to IFFT unit 109.

It is mapped to the control information in multiple subframes of multiple descending per unit band by map unit 108 and sends data In IFFT unit 109, it is transformed into time-domain signal from frequency-region signal, the additional CP of CP extra cell 110 becomes ofdm signal After, wireless transmission unit 111 carry out D/A (Digital to Analog, numeral is to simulation) and convert, amplify and up-conversion Process Deng transmission, send to terminal 200 via antenna.

Radio receiving unit 112 receives the up response signal or reference signal sent from terminal 200 via antenna, to upper Row response signal or reference signal carry out the reception such as down coversion, A/D conversion and process.

CP removing unit 113 removes and is received CP additional in the up response signal after processing or reference signal.

PUCCH extraction unit 114, from receiving the PUCCH signal that signal packet contains, extracts and prenotices to terminal 200 The signal in the PUCCH region that binding ACK/NACK resource is corresponding.Here, so-called binding ACK/NACK resource, as it was previously stated, it is should The resource of this transmission binding ack/nack signal, is the resource using DFT-S-OFDM format structure.Specifically, PUCCH carries Take unit 114 and extract data division (that is, the configuration binding ACK/NACK in the PUCCH region corresponding with binding ACK/NACK resource The SC-FDMA code element of signal) and reference signal part (that is, be configured to the reference signal of demodulation binding ack/nack signal SC-FDMA code element).The data division of extraction is exported binding A/N despread unit 119 by PUCCH extraction unit 114, by reference Signal section exports despread unit 115-1.

It addition, PUCCH extraction unit 114 extracts multiple PUCCH region from the PUCCH signal that reception signal packet contains, should Multiple PUCCH regions and the A/N money corresponding to sending the CCE shared by descending distribution control information (DCI) used PDCCH Source and prenotice to multiple A/N resources of terminal 200 corresponding.Here, so-called A/N resource, it is the money that send A/N Source.Specifically, the data division in the PUCCH region that PUCCH extraction unit 114 extraction is corresponding with A/N resource (is configured with up The SC-FDMA code element of control signal) and reference signal part (be configured with reference signal for demodulating uplink control signal SC-FDMA code element).Now, PUCCH extraction unit 114 according to control information MAP has been arrived by map unit 108 PDCCH or In any one in R-PDCCH, from set up with CCE the PUCCH resource associated and terminal 200 was prenoticed specific In PUCCH resource, in the transmission of Response to selection signal, used resource (that is, is configured with the money of the signal of self terminal 200 Source), selected resource is extracted response signal.And, PUCCH extraction unit 114 by the data division extracted and The output of both reference signal parts is to despread unit 115-2.So, by from set up with CCE the PUCCH resource that associates and The resource selected in the specific PUCCH resource notifying terminal 200, receives response signal.

Sequence control unit 116 generate likely the A/N notified from terminal 200, for A/N reference signal and For the basic sequence used in the respective spread spectrum of reference signal of binding ack/nack signal, (Base sequence, i.e. sequence are long Degree is the ZAC sequence of 12).It addition, sequence control unit 116 is in the PUCCH resource that terminal 200 may use, determine respectively The associated window corresponding with the resource (hereinafter referred to as " reference signal resource ") likely configuring reference signal.And, sequence controls Unit 116 would indicate that the associated window corresponding with bundling the reference signal resource likely configuring reference signal in ACK/NACK resource Information and basic sequence export dependent processing unit 117-1.Sequence control unit 116 would indicate that and reference signal resource pair The information of the associated window answered and basic sequence export dependent processing unit 117-1.It addition, sequence control unit 116 would indicate that Export relevant to configuration A/N and information and basic sequence for associated window corresponding to the A/N resource of the reference signal of A/N Processing unit 117-2.

Despread unit 115-1 and dependent processing unit 117-1 are carried out from the PUCCH corresponding with binding ACK/NACK resource The process of the reference signal of extracted region.

Specifically, despread unit 115-1 utilizes terminal 200 should use in the reference signal of binding ACK/NACK resource Walsh sequence pair reference signal part in secondary spread spectrum de-spreads, and exports the signal after despreading to dependent processing unit 117-1。

Dependent processing unit 117-1 uses information and the basic sequence representing the associated window corresponding with reference signal resource, Obtain from despread unit 115-1 input signal and the basic sequence being possibly used for once spreading terminal 200 between relevant Value.And, correlation is exported binding A/N identifying unit 121 by dependent processing unit 117-1.

Despread unit 115-2 and dependent processing unit 117-2 are carried out from the multiple PUCCHs corresponding with multiple A/N resources The reference signal of extracted region and the process of A/N.

Specifically, despread unit 115-2 utilizes terminal 200 in the data division of each A/N resource and reference signal portion Walsh sequence and DFT sequence data portion and the reference signal part that should be used for secondary spread spectrum in Fen de-spread, By the signal output after despreading to dependent processing unit 117-2.

Dependent processing unit 117-2 uses information and the basic sequence representing the associated window corresponding with each A/N resource, respectively Obtain from despread unit 115-2 input signal and the basic sequence being possibly used for once spreading terminal 200 between relevant Value.And, each correlation is exported A/N identifying unit 118 by dependent processing unit 117-2.

A/N identifying unit 118 is based on the multiple correlations inputted from dependent processing unit 117-2, it is determined that terminal 200 uses Which A/N resource have sent signal, or does not uses arbitrary A/N resource.And, A/N identifying unit 118 is being judged to terminal 200 use in the case of arbitrary A/N resources have sent signal, use the component corresponding with reference signal and corresponding with A/N Component carries out synchronous detection, and the result of synchronous detection exports repeating transmission control signal signal generating unit 122.On the other hand, A/N Identifying unit 118, in the case of being judged to that terminal 200 does not uses arbitrary A/N resource, would indicate that the information not using A/N resource Output is to retransmitting control signal signal generating unit 122.

Binding A/N despread unit 119 to the data bundling ACK/NACK resource from PUCCH extraction unit 114 input The binding ack/nack signal of part correspondence is de-spread by DFT sequence, and outputs this signal to IDFT unit 120.

Binding ack/nack signal on the frequency domain that binding A/N despread unit 119 inputs is passed through by IDFT unit 120 IDFT process is transformed to the signal in time domain, and the binding ack/nack signal in time domain exports binding A/N identifying unit 121。

Binding A/N identifying unit 121 uses the reference of the binding ack/nack signal from dependent processing unit 117-1 input Signal message, demodulates the binding ACK/ corresponding with the data division bundling ACK/NACK resource from IDFT unit 120 input NACK signal.It addition, the binding ack/nack signal after demodulation is decoded, by decoded result by binding A/N identifying unit 121 Repeating transmission control signal signal generating unit 122 is exported as binding A/N information.But, binding A/N identifying unit 121 is from relevant The correlation of processing unit 117-1 input is less than threshold value, it is determined that do not use binding A/N resource to send the feelings of signal for terminal 200 Under condition, would indicate that the information of this situation exports repeating transmission control signal signal generating unit 122.

Retransmit control signal signal generating unit 122 based on the information inputted from binding A/N identifying unit 121 and to sentence from A/N The information of cell 118 input, it is determined whether the data (down link data) being transmitted across by descending per unit band should be retransmitted, Generate based on result of determination and retransmit control signal.Specifically, retransmit control signal signal generating unit 122 and retransmit being judged as needing By in the case of the down link data that certain descending per unit band is transmitted across, generate the repeating transmission representing this down link data The repeating transmission control signal of order, and repeating transmission control signal is exported data transmission control unit 106.Letter is controlled it addition, retransmit Number signal generating unit 122 is being judged as the situation that need not retransmit the down link data being transmitted across by certain descending per unit band Under, generate and represent the repeating transmission control signal not retransmitting the down link data being transmitted across by this descending per unit band, and will weight Send out control signal and export data transmission control unit 106.

Additionally, in A/N identifying unit 118, binding A/N identifying unit 121 and repeating transmission control signal signal generating unit 122 Retransmit the details controlled described below.

(structure of terminal)

Figure 12 is the block diagram of the structure of the terminal 200 representing present embodiment.In fig. 12, terminal 200 has wireless Receive unit 201, CP removing unit 202, FFT (Fast Fourier Transform, fast fourier transform) unit 203, Extraction unit 204, demodulating unit 205, decoding unit 206, identifying unit 207, control unit 208, demodulating unit 209, decoding Unit 210, CRC unit 211, response signal signal generating unit 212, coding and 213, spectrum-spreading unit 214-1 of modulating unit, 214-2, secondary spectrum-spreading unit 215-1,215-2, DFT unit 216, spectrum-spreading unit 217, IFFT unit 218-1,218-2,218- 3, CP extra cell 219-1,219-2,219-3, time-multiplexed unit 220, selection unit 221 and wireless transmission unit 222。

Radio receiving unit 201 receives the ofdm signal sent from base station 100 via antenna, carries out receiving ofdm signal The receptions such as down coversion, A/D conversion process.Additionally, reception ofdm signal comprises: the PDSCH of distribution in the resource in PDSCH In signal (down link data), resource in R-PDCCH in the R-PDCCH signal of distribution or the resource in PDCCH The PDCCH signal of distribution.Hereinafter, sometimes do not differentiate between R-PDCCH signal and PDCCH signal, be simply referred as " PDCCH signal " or " downlink channel control signal ".

CP removing unit 202 removes CP additional in the ofdm signal being received after processing.

FFT unit 203 carries out FFT to receiving ofdm signal, is converted into frequency-region signal, is exported by the reception signal obtained Extraction unit 204.

Extraction unit 204 is according to the code rate information of input, under extracting in the reception signal obtained from FFT unit 203 Row controls channel signal (PDCCH signal or R-PDCCH signal).That is, CCE (or the R-of Downlink Control Information Resources allocation is constituted CCE) quantity changes according to encoding rate, and therefore extraction unit 204 is single for extracting with the CCE of the number corresponding with this encoding rate Position, extracts downlink channel control signal.It addition, downlink channel control signal is extracted by each descending per unit band.Carry The downlink channel control signal taken out is output to demodulating unit 205.

It addition, extraction unit 204 based on obtain from identifying unit 207 described later about the downlink data mailing to this device The information of Resources allocation, extracts down link data (downstream data channel signal (PDSCH signal)) from receiving, output signal To demodulating unit 209.So, what extraction unit 204 reception had been mapped in any one in PDCCH and R-PDCCH is descending Distribution control information (DCI), receives down link data by PDSCH.

The downlink channel control signal obtained from extraction unit 204 is demodulated by demodulating unit 205, the demodulation that will obtain Result exports to decoding unit 206.

The demodulation result obtained from demodulating unit 205, according to the code rate information of input, is solved by decoding unit 206 Code, exports the decoded result obtained to identifying unit 207.

Whether identifying unit 207 is destined for this to the control information comprised from the decoded result that decoding unit 206 obtains The control information of device carries out blind judgement (supervision).This judgement is in units of the decoded result corresponding with above-mentioned extraction unit Carry out.Such as, it is determined that unit 207 uses the Termination ID of this device to demask CRC bit, by CRC=OK (indifference Wrong) control information be judged to mail to the control information of this device.And, it is determined that the control mailing to this device is believed by unit 207 The information relevant to the downlink data Resources allocation for this device comprised in breath exports to extraction unit 204.

It addition, identifying unit 207 is in the feelings control information (the most descending distribution control information) mailing to this device being detected Under condition, would indicate that the information of generation (existence) ack/nack signal notifies to control unit 208.It addition, identifying unit 207 from PDCCH signal detect in the case of mailing to the control information of this device, by the information relevant with the CCE that this PDCCH takies Output is to control unit 208.

Control unit 208, according to the information relevant with CCE inputted from identifying unit 207, determines and associates with this CCE foundation A/N resource.And, control unit 208 would correspond to set up the A/N resource associated with CCE or lead to from base station 100 in advance The basic sequence of the A/N resource known and cyclic shift amount export a spectrum-spreading unit 214-1, by corresponding with this A/N resource Walsh sequence and DFT sequence export secondary spectrum-spreading unit 215-1.Further, the frequency of A/N resource is provided by control unit 208 Source information exports IFFT unit 218-1.

It addition, control unit 208 is being judged as using the feelings of binding ACK/NACK resource transmission binding ack/nack signal Under condition, would correspond in advance from the reference signal part (reference signal resource) of the binding ACK/NACK resource of base station 100 notice Basic sequence and cyclic shift amount export a spectrum-spreading unit 214-2, Walsh sequence is exported secondary spectrum-spreading unit 215- 2.Further, the frequency resource information of binding ACK/NACK resource is exported IFFT unit 218-2 by control unit 208.

It addition, the DFT sequence being used for bundling the spread spectrum of the data division of ACK/NACK resource is exported by control unit 208 Spectrum-spreading unit 217, exports IFFT unit 218-3 by the frequency resource information of binding ACK/NACK resource.

It addition, control unit 208 instruction select unit 221 select binding ACK/NACK resource or A/N resource in arbitrary Person, and selected resource is exported wireless transmission unit 222.Now, control unit 208 is according to descending distribution control information (DCI) in any one being mapped in PDCCH or R-PDCCH, from setting up the PUCCH resource associated with CCE and from base station In the 100 specific PUCCH resource prenoticed, select the resource for sending response signal, control the transmission of response signal.This Outward, control unit 208 instruction response signal signal generating unit 212 according to selected resource generate binding ack/nack signal or Any one in ack/nack signal.Additionally, the determining method of A/N resource in control unit 208 and binding ACK/NACK The details of the control method of resource is described below.

The down link data obtained from extraction unit 204 is demodulated by demodulating unit 209, by the descending chain after demodulation Circuit-switched data exports to decoding unit 210.

The down link data obtained from demodulating unit 209 is decoded by decoding unit 210, by decoded descending chain Circuit-switched data exports to CRC unit 211.

CRC unit 211 generates the decoded down link data obtained from decoding unit 210, uses CRC by under each Row per unit band carries out error detection, and ACK exports in the case of CRC=OK (zero defect) response signal signal generating unit 212, In the case of CRC=NG (having mistake), NACK is exported response signal signal generating unit 212.It addition, CRC unit 211 is at CRC= In the case of OK (zero defect), using decoded down link data as receiving data output.

Response signal signal generating unit 212 is based on the downlink in descending per unit band that input from CRC unit 211, each The reception situation (error detection of down link data) of data generates response signal.That is, response signal signal generating unit 212 is at quilt Control unit 208 indicate generation binding ack/nack signal in the case of, generate as independent data comprise respectively each under The binding ack/nack signal of the error detection of row per unit band.On the other hand, response signal signal generating unit 212 is being controlled list In the case of unit 208 indicates generation ack/nack signal, generate the ack/nack signal of a code element.And, respond signal The output of response signal extremely coding and the modulating unit 213 that signal generating unit 212 will generate.

Coding and modulating unit 213 are in the case of have input binding ack/nack signal, to the binding ACK/ inputted NACK signal encodes and modulates, and generates the modulated signal of 12 code elements, and exports DFT unit 216.It addition, coding With modulating unit 213 in the case of the ack/nack signal that have input a code element, this ack/nack signal is modulated, And export a spectrum-spreading unit 214-1.

DFT unit 216 converges the seasonal effect in time series binding ack/nack signal of 12 inputs and carries out DFT process, thus Obtain the component of signal on 12 frequency axiss.Then, 12 component of signals are exported spectrum-spreading unit by DFT unit 216 217。

Spectrum-spreading unit 217 uses the DFT sequence indicated by control unit 208, to 12 inputted from DFT unit 216 Component of signal spreads, and exports IFFT unit 218-3.

It addition, a spectrum-spreading unit corresponding with the reference signal resource of A/N resource and binding ACK/NACK resource 214-1 and 214-2, according to the instruction of control unit 208, utilizes the basic sequence corresponding with resource to ack/nack signal or ginseng Examine signal to spread, and the signal after spread spectrum is exported secondary spectrum-spreading unit 215-1,215-2.

Secondary spectrum-spreading unit 215-1,215-2, according to the instruction of control unit 208, use walsh sequence or DFT sequence Arrange and the signal after the once spread spectrum of input is spread, and export IFFT unit 218-1,218-2.

IFFT unit 218-1,218-2,218-3 according to the instruction of control unit 208, by the signal of input with should configure Frequency location corresponding, carry out IFFT process.Thus, the signal of IFFT unit 218-1,218-2,218-3 it is input to (i.e., Ack/nack signal, the reference signal of A/N resource, the reference signal of binding ACK/NACK resource, binding ack/nack signal) quilt It is transformed to the signal of time domain.

The signal identical with the afterbody of the signal after IFFT is added by CP extra cell 219-1,219-2,219-3 as CP Head to this signal.

The binding ack/nack signal inputted from CP extra cell 219-3 (that is, is used binding by time-multiplexed unit 220 The signal that the data division of ACK/NACK resource sends) and binding ACK/NACK resource from CP extra cell 219-2 input Reference signal carries out time-multiplexed in binding ACK/NACK resource, and the signal obtained exports selection unit 221.

Select unit 221 according to the instruction of control unit 208, select the binding ACK/ from the input of time-multiplexed unit 220 NACK resource and any one from the A/N resource of CP extra cell 219-1 input, will be assigned to the letter in selected resource Number output is to wireless transmission unit 222.

Wireless transmission unit 222 carries out D/A conversion, amplification and up-conversion etc. to from the signal selecting unit 221 to obtain Transmission processes, and is sent to base station 100 from antenna.

(base station 100 and the action of terminal 200)

Base station 100 configured as described above and the action of terminal 200 are described.

In the following description, it is assumed that each in multiple terminals 200 of base station 100, (configure) is set at descending point Joining in the transmission of control information is only to use PDCCH or be used together R-PDCCH with PDCCH, and setting result is notified to Each terminal 200.But, even if base station 100 in the case of setting use R-PDCCH to terminal 200, distinguish also according to situation Use PDCCH and R-PDCCH.Such as, base station 100 is few in the quantity of the terminal 200 that should send control information in certain subframe In the case of, use PDCCH to send the control letter for whole terminals 200 (including the terminal 200 being set as using R-PDCCH) Breath.On the other hand, such as, base station 100 is in the many situation of the quantity of the terminal 200 that should send control information in certain subframe Under, use R-PDCCH to send the control information for a part of terminal 200 (being set as using the terminal 200 of R-PDCCH).

Hereinafter, the control example 1 to 4 for sending the A/N resource responding signal is described.

(controlling example 1: carrierfree is polymerized the situation of (Carrier Aggregation))

Base station 100 sets R-PDCCH as sending descending distribution control information (DCI) in advance to terminal 200 During down control channel, together with the setting result of down control channel, such as, RRC signaling (signaling) etc. is used to express (Explicit) notify (Explicit signalling) specific A/N resource.Such as, in Figure 13 A and Figure 13 B, Base station 100 notifies the specific PUCCH resource in PUCCH region 2 (PUCCH2) expressly to the terminal 200 setting R-PDCCH As A/N resource.

It addition, the PUCCH money in Figure 13 A and Figure 13 B, in each CCE Yu PUCCH region 1 (PUCCH1) that PDCCH has Association (Implicit signalling) is set up in source (A/N resource) one to one.

Further, descending distribution control information (DCI) is mapped in any one in PDCCH or R-PDCCH by base station 100, Terminal 200 is sent descending distribution control information (DCI).

Terminal 200 is after being set as by base station 100 using PDCCH and R-PDCCH, by PDCCH region and R- Both PDCCH region carry out blind decoding (supervision), and descending distribution control information (DCI) of this device is mail in detection.Further, eventually End 200 (extraction units 204) control letter based on the descending distribution in any one being mapped in PDCCH and R-PDCCH Breath, extracts down link data (DL data).

Then, terminal 200 detection uses and mails to the downlink number that descending distribution control information (DCI) of this device is distributed According to the presence or absence of the reception error of (DL data), based on error detection result, the PUCCH of up per unit band is used to send ACK/ NACK signal.Now, terminal 200 is mapped to PDCCH or R-according to descending distribution control information (DCI) mailing to this device Any one in PDCCH (have received descending distribution control information according to by which one in PDCCH or R-PDCCH), from Set up the PUCCH resource associated with CCE and from the specific A/N resource that base station 100 is prenoticed, select to be used for sending ACK/ The A/N resource of NACK signal.

Specifically, terminal 200 (control unit 208) as shown in FIG. 13A, mails to this device being obtained by PDCCH Descending distribution control information (DCI) in the case of, the CCE selecting and have mapped this descending distribution control information (that is, have sent The CCE of PDCCH.Or send this CCE shared by descending distribution used PDCCH of control information) set up pass one to one The PUCCH resource (PUCCH resource in PUCCH1) of connection is as the A/N resource for sending ack/nack signal.And, terminal A/N resource selected by 200 uses sends ack/nack signal.

On the other hand, terminal 200 (control unit 208) as shown in Figure 13 B, mails to this dress being obtained by R-PDCCH In the case of descending distribution control information (DCI) put, select the specific A/N resource notified expressly in advance from base station 100 (PUCCH resource in PUCCH2) is as the A/N resource for sending ack/nack signal.And, terminal 200 uses selected A/N resource send ack/nack signal.

It addition, base station 100 is according to the down control channel that have mapped the descending distribution control information mailing to each terminal 200 (PDCCH or R-PDCCH), selects to send the used PUCCH resource of ack/nack signal from terminal 200, selected by extraction The signal comprised in PUCCH resource.

So, base station 100 by notifying A/N resource expressly to terminal 200, it is not necessary to will as said method 1 PUCCH resource is set up one to one with whole R-CCE and is associated.Thereby, it is possible to suppression is in order to ensure for down link data The increase of the A/N number of resources of the transmission of ack/nack signal, and this down link data is by sending via R-PDCCH The distribution of descending distribution control information, i.e. the increase of PUCCH resource expense can be suppressed.

It addition, although base station 100 notifies an A/N resource expressly to terminal 200, terminal 200 is the most all the time at ACK/ The transmission of NACK signal uses this A/N resource.Specifically, terminal 200 controls letter in distribution descending via PDCCH reception In the case of breath, the CCE foundation shared by preferential use and this descending distribution used PDCCH of control information of transmission associates PUCCH resource.

Therefore, even if base station 100 is notified of identical A/N resource expressly to multiple terminals 200 (shown in Figure 13 A, B The A/N resource prenoticed), the restriction to the scheduling unit of base station 100 is also only " not by for being informed about identical A/ The descending distribution control information of multiple terminals 200 of N resource is configured at R-PDCCH region in identical subframe ".Such as, base Standing 100 can only descending distribution control to the terminal 200 mailing to be notified of in multiple terminals 200 of identical A/N resource Information processed uses R-PDCCH to send, and uses PDCCH to send the descending distribution control information mailing to remaining other-end 200. Thus, only one of which terminal 200 uses the A/N resource to multiple terminals 200 notice to send response signal.That is, base station 100 is passed through Carry out this most simply dispatching, it becomes possible to while making multiple terminal 200 share an A/N resource, control to avoid from The conflict of the ack/nack signal of each terminal 200.

Thus, base station 100 can set common A/N resource to each terminal 200, because of without as above state method 2 that Sample sets single A/N resource to each terminal 200, and can suppress the increase of the expense of PUCCH resource.

Therefore, controlling in example 1, hardly the scheduling unit to base station 100 bring restriction and can be in multiple terminals 200 In share identical A/N resource, and preferentially use and pre-build, with the CCE shared by PDCCH, the PUCCH resource associated, because of And the service efficiency of PUCCH resource can be improved.That is, in terminal 200, even if having received descending distribution via R-PDCCH In the case of control information, it is also possible to efficiently send ack/nack signal.

(control example 2: have carrier aggregation (Carrier Aggregation) and apply Channel assignment (Channel Selection) situation)

In controlling example 2, as shown in Figure 14 A and Figure 14 B, set (configure) two descending units for terminal 200 Frequency band and a up per unit band.That is, between base station 100 and terminal 200, carry out using two descending per unit band with And the communication of a up per unit band, i.e. carry out communication based on asymmetric carrier aggregation.

It addition, as the sending method of the response signal (ack/nack signal) in terminal 200, apply Channel assignment (Channel selection).In Figure 14 A and Figure 14 B, feedback is needed to send out respectively for by two descending per unit band Two error detection result (four kinds of combinations) of the down link data sent, thus Channel assignment (Channel selection) Two A/N resources (PUCCH resource) of middle needs.

It addition, a descending list as shown in Figure 14 A and Figure 14 B, in two descending per unit band that terminal 200 is set Position frequency band and the up per unit band that should send response signal become a pair.This with should send response signal up list Position frequency band become the descending per unit band of a pair be referred to as PCC (Primary Component Carrier, principal component carrier wave) or Pcell (Primary Cell, master unit).Such as, PCC (Pcell) is the up unit frequency sending with should sending response signal Descending per unit band with relevant announcement information (such as SIB2 (System Information Block Type 2)).Separately Outward, each CCE comprised in the PDCCH region in PCC (Pcell) and PUCCH resource (Figure 14 A and the figure in up per unit band 14B is the PUCCH resource in PUCCH1) establish association (Implicit signalling) one to one.

Now, base station 100 in advance terminal 200 is set R-PDCCH as Pcell in for send descending distribution control During the down control channel of information (DCI), together with the setting result of down control channel, such as, use RRC signaling (signaling) etc. notify (Explicit signalling) two specific A/N resources with expressing (Explicit).Such as, at figure In 14A and Figure 14 B, in base station 100 notifies PUCCH region 2 (PUCCH2) expressly to the terminal 200 setting R-PDCCH Specific two PUCCH resource are as A/N resource 1 and A/N resource 2.

Further, what descending distribution control information (DCI) was mapped in PDCCH or R-PDCCH of Pcell by base station 100 appoints In one, terminal 200 is sent descending distribution control information (DCI).Further, base station 100 is by descending distribution control information (DCI) It is mapped in the PDCCH of the descending per unit band beyond Pcell, terminal 200 is sent descending distribution control information (DCI).

Terminal 200 at least in Pcell by both PDCCH region and R-PDCCH region are carried out blind decoding (prison Depending on), descending distribution control information (DCI) of this device is mail in detection.Further, terminal 200 (extraction unit 204) is based on mapped Descending distribution control information in any one in PDCCH and R-PDCCH, extracts down link data (DL data).By This, the terminal 200 each reception down link data by multiple descending per unit band.

Then, terminal 200 (CRC unit 211) is in each descending per unit band, and descending point of this device is mail in detection use Join the presence or absence of the reception error of the down link data (DL data) that control information (DCI) is distributed.And, response signal generates Unit 212 according to the pattern of the error detection result (presence or absence of reception error) of the down link data of each descending per unit band, Generate ack/nack signal.Then, terminal 200 uses the PUCCH of up per unit band to send ack/nack signal.Now, eventually End 200 be mapped in PDCCH or R-PDCCH according to descending distribution control information (DCI) mailing to this device in Pcell which In one, from setting up the PUCCH resource associated with CCE and from the specific A/N resource that base station 100 is prenoticed, select to use In the A/N resource sending ack/nack signal.

Specifically, terminal 200 (control unit 208) as shown in Figure 14 A, by two descending per unit band In the case of the PDCCH of Pcell obtains the descending distribution control information mailing to this device, use and map this descending distribution control The CCE (that is, have sent the CCE of PDCCH) of information processed establishes the PUCCH resource (PUCCH in PUCCH1 of association one to one Resource), or two A/N resources of the A/N resource 1 notified expressly from base station 100 in advance, carry out Channel assignment (Channel Selection) action.That is, in Figure 14 A, terminal 200 is according to the downlink number received by two descending per unit band According to reception situation (pattern with presence or absence of reception error), select to use in which resource in the two A/N resource which Phase point sends ack/nack signal.And, terminal 200 uses selected A/N resource and phase point to send ACK/NACK Signal.

On the other hand, terminal 200 (control unit 208) as shown in Figure 14B, is sent out being obtained by the R-PDCCH of Pcell In the case of the descending distribution control information of this device, use two the A/N resources notified expressly in advance from base station 100 (A/N resource 1 and A/N resource 2) carries out the action of Channel assignment (Channel Selection).

So, base station 100 is as controlling example 1, by terminal 200 notifying, A/N resource (at Figure 14 A and figure expressly 14B is A/N resource 1,2), it is not necessary to as said method 1, PUCCH resource is set up pass one to one with whole R-CCE Connection.Thereby, it is possible to suppression is in order to ensure the increasing of the A/N number of resources of the transmission of the ack/nack signal for down link data Add, and this down link data is the descending distribution control information distribution by sending via R-PDCCH, i.e. can suppress The increase of PUCCH resource expense.

It addition, base station 100 is as controlling example 1, although terminal 200 to be notified expressly A/N resource, but when terminal 200 In Pcell via PDCCH reception in the case of descending distribution control information, preferential use and send this descending distribution and control The CCE shared by PDCCH of the used Pcell of information sets up the PUCCH resource of association.Therefore, base station 100 and control example 1 Equally, by the most simply dispatching, it becomes possible to make multiple terminal 200 share A/N resource, and control to avoid from respectively The conflict of the ack/nack signal of terminal 200, it is thus possible to the increase of the expense of suppression PUCCH resource.

Therefore, controlling in example 2, hardly the scheduling unit to base station 100 bring restriction and can be in multiple terminals 200 In share identical A/N resource, and preferentially use and pre-build, with the CCE shared by the PDCCH of Pcell, the PUCCH associated Resource, it is thus possible to improve the service efficiency of PUCCH resource.That is, in terminal 200, Channel assignment (Channel is being carried out Selection) time, even if in the case of have received descending distribution control information via R-PDCCH, it is also possible to efficiently send Ack/nack signal.

Additionally, in Figure 14 A and Figure 14 B, illustrate that terminal 200 only monitors the situation in R-PDCCH region in Pcell. But, even if in the case of the descending per unit band that terminal is beyond Pcell also monitors R-PDCCH, though i.e. Pcell with In the case of outer descending per unit band also sets R-PDCCH, it is also possible to apply the action of above-mentioned control example 2.

It addition, in Figure 14 A and Figure 14 B, illustrate terminal 200 is set the situation of two descending per unit band, but right The quantity of the descending per unit band that terminal 200 sets can also be more than three.At the descending per unit band that terminal 200 is set Quantity be more than three in the case of, compared with the situation that the quantity of descending per unit band is two, each descending per unit band The combination (pattern with presence or absence of reception error) of error detection result increase, thus Channel assignment (Channel Selection) resource (being two resources when the quantity of descending per unit band is two) required in also increases.To this, base station 100, according to the quantity to the descending per unit band that terminal 200 sets, determine the quantity of the A/N resource notified expressly.

Additionally, in this control example, illustrate that base station 100 concurrently sets carrier aggregation and Channel assignment to terminal 200 The situation of (Channel selection), even if in the case of carrying out this setting, also has base station 100 according to circumstances to end End 200 carries out being not based on downlink data distribution (that is, Non-carrier aggregation assignment) of carrier aggregation Situation.In certain subframe, terminal 200 has been carried out the situation of the downlink data distribution being not based on carrier aggregation in base station 100 Under, terminal 200 carries out the action shown in Figure 13 in the burst, but in the case, in A/N resource in Figure 13 and Figure 14 A/N resource 1 (or A/N resource 2) can be set as identical resource.By doing so it is possible, switch adaptively in base station 100 based on The communication of carrier aggregation be not based on the communication of carrier aggregation in the case of, it is not required that additional A/N resource notification is given eventually End 200, it is possible to cut down expense.

(control example 3: have carrier aggregation (Carrier Aggregation) and apply the feelings of DFT-S-OFDM form Condition)

In controlling example 3, as shown in Figure 15 A to 15D, set (configure) two descending unit frequencies for terminal 200 Band and a up per unit band.It addition, as the sending method of the response signal in terminal 200, apply DFT-S-OFDM Form.

It addition, a descending unit as shown in Figure 15 A to 15D, in two descending per unit band that terminal 200 is set Frequency band is Pcell (PCC), each CCE comprised in the PDCCH region in Pcell and the PUCCH resource in up per unit band (being the PUCCH resource in PUCCH1 in Figure 15 A to 15D) establishes association (Implicit signalling) one to one.

Now, base station 100 in advance to terminal 200 as being used for sending descending distribution control information (DCI) in Pcell Down control channel set R-PDCCH time or set carrier aggregation (Carrier Aggregation) time, with set result Together, RRC signaling etc. is such as used to notify (Explicit signalling) binding with expressing (Explicit) A/N resource (has the resource of DFT-S-OFDM form.Otherwise referred to as Large ACK/NACK resource).Such as, at Figure 15 A extremely In 15D, base station 100 notifies expressly that to terminal 200 the specific PUCCH resource in PUCCH region 2 (PUCCH2) is as binding A/ N resource.

Terminal 200 at least in Pcell by both PDCCH region and R-PDCCH region are carried out blind decoding (prison Depending on), descending distribution control information (DCI) of this device is mail in detection.Further, terminal 200 (extraction unit 204) is based on mapped Descending distribution control information in any one in PDCCH and R-PDCCH, extracts down link data (DL data).According to This, terminal 200 at least one descending per unit band by multiple descending per unit band, receive under each descending per unit band Row distribution control information and down link data.

Then, terminal 200 (CRC unit 211) is in each descending per unit band, and descending point of this device is mail in detection use Join the presence or absence of the reception error of the down link data (DL data) that control information (DCI) is distributed.And, response signal generates Unit 212 generates the sound of the error detection result (presence or absence of reception error) of down link data based on each descending per unit band Induction signal, i.e. bundlees ack/nack signal (comprising response signal with presence or absence of the respective reception error of each downlink data) or ACK/ NACK signal.And, terminal 200 uses the PUCCH of up per unit band to send response signal (ack/nack signal or binding Ack/nack signal).Now, terminal 200 is mapped according to descending distribution control information (DCI) mailing to this device in Pcell In any one in PDCCH or R-PDCCH, from setting up, with CCE, the PUCCH resource associated and prenoticing from base station 100 Specific binding A/N resource in, select the A/N resource for sending response signal.

Specifically, terminal 200 (control unit 208) as shown in fig. 15, in multiple descending per unit band, is passed through The PDCCH of Pcell obtains the descending distribution control information mailing to this device, and passes through other descending per unit band (the most also Referred to as SCC (Secondary Component Carrier, auxiliary component carrier) or Scell (Secondary Cell, auxiliary little District)) do not obtain descending distribution control information in the case of, select (i.e. to have sent with the CCE mapping this descending distribution control information The CCE of PDCCH) establish the PUCCH resource (PUCCH resource in PUCCH1) of association one to one.And, terminal 200 makes By selected PUCCH resource, send the response signal for the down link data (DL data) received by Pcell (ack/nack signal).

It addition, terminal 200 (control unit 208) is as shown in fig. 15b, mail to this dress being obtained by the R-PDCCH of Pcell The descending distribution control information put, and in the case of not obtaining descending distribution control information by other descending per unit band, Select the binding A/N resource notified expressly in advance from base station 100.And, terminal 200 uses selected binding A/N resource, Send the response signal (ack/nack signal) for the down link data (DL data) received by Pcell.

It addition, terminal 200 (control unit 208) is as shown in figure 15 c, mail to this device being obtained by the PDCCH of Pcell Descending distribution control information, and in the case of also obtain descending distribution control information by other descending per unit band, Select the binding A/N resource notified expressly in advance from base station 100.And, terminal 200 uses selected binding A/N resource, Send the response for the down link data (DL data) received respectively by Pcell and other descending per unit band to believe Number through converging coding (Joint coding, combined coding) and the binding ack/nack signal that obtains.

It addition, terminal 200 (control unit 208) is as shown in figure 15d, mail to this dress being obtained by the R-PDCCH of Pcell The descending distribution control information put, and the situation of descending distribution control information is also obtain by other descending per unit band Under, select the binding A/N resource notified expressly in advance from base station 100.And, terminal 200 uses selected binding A/N to provide Source, sends the response for the down link data (DL data) received respectively by Pcell and other descending per unit band The binding ack/nack signal that signal obtains through converging coding.

That is, terminal 200 receives descending distribution control information by Pcell in multiple descending per unit band, and passes through Other descending per unit band have received (Carrier aggregation in the case of descending distribution control information assignment.Figure 15 C and Figure 15 D), do not rely in Pcell for sending the descending control letter of descending distribution control information Road (PDCCH and R-PDCCH), uses the binding A/N resource notified expressly in advance from base station 100.

So, base station 100 is as controlling example 1, by terminal 200 notifies binding A/N resource expressly, it is not necessary to as PUCCH resource is set up with whole R-CCE and is associated by said method 1 like that one to one.Thereby, it is possible to suppression in order to ensure for The increase of the A/N number of resources of the transmission of the ack/nack signal of down link data, and this down link data is by warp The descending distribution control information distribution sent by R-PDCCH, i.e. the increase of PUCCH resource expense can be suppressed.

It addition, base station 100 is as controlling example 1, although terminal 200 to be notified expressly a binding A/N resource, but whole End 200 uses this binding A/N resource the most all the time in the transmission of ack/nack signal.Specifically, terminal 200 via The descending distribution control information of the PDCCH reception of Pcell, and do not receive descending distribution by other descending per unit band and control In the case of information, the preferential CCE shared by PDCCH used and send this descending distribution used Pcell of control information Establish the PUCCH resource of association.That is, terminal 200 use the most when necessary binding A/N resource (have DFT-S-OFDM lattice The resource of formula), it is thus possible to make multiple terminal 200 share identical binding A/N resource.Therefore, base station 100 is same with control example 1 Sample, by the most simply dispatching, it becomes possible to makes multiple terminal 200 share identical binding A/N resource, and controls to keep away Exempt from the conflict of the response signal from each terminal 200, it is thus possible to the increase of the expense of suppression PUCCH resource.

Therefore, controlling in example 3, hardly the scheduling unit to base station 100 bring restriction and can be in multiple terminals 200 In share identical binding A/N resource, and preferentially use and pre-build with the CCE shared by the PDCCH of Pcell and associate PUCCH resource, it is thus possible to improve the service efficiency of PUCCH resource.That is, in terminal 200, DFT-S-OFDM form is applied Time, even if in the case of have received descending distribution control information via R-PDCCH, it is also possible to efficiently send response signal.

Additionally, in Figure 15 A to 15D, illustrate that terminal 200 only monitors the situation in R-PDCCH region in Pcell.But It is, in the case of also monitoring R-PDCCH in the terminal descending per unit band beyond Pcell, i.e. descending beyond Pcell In the case of per unit band also sets R-PDCCH, it is also possible to apply the action of above-mentioned control example 3.

(control example 4: have carrier aggregation (Carrier Aggregation) and apply the feelings of DFT-S-OFDM form Condition)

In controlling example 4, as shown in Figure 16 A to 16D, as controlling example 3, set (configure) for terminal 200 Two descending per unit band and a up per unit band.It addition, as the sending method of the response signal in terminal 200, Application DFT-S-OFDM form.

It addition, a descending unit as shown in Figure 16 A to 16D, in two descending per unit band that terminal 200 is set Frequency band is Pcell (PCC), each CCE comprised in the PDCCH region in Pcell and the PUCCH resource in up per unit band (being the PUCCH resource in PUCCH1 in Figure 16 A to 16D) establishes association (Implicit signalling) one to one.

Now, base station 100 in advance to terminal 200 as being used for sending descending distribution control information (DCI) in Pcell Down control channel when setting R-PDCCH or when setting Carrier Aggregation, and set together with result, such as Use RRC signaling etc. notify with expressing (Explicit) (Explicit signalling) binding A/N resource with And an A/N specific PUCCH resource of resource the two.Such as, in Figure 16 A to 16D, terminal 200 is led to by base station 100 expressly Know that the specific PUCCH resource in PUCCH region 2 (PUCCH2) is respectively as binding A/N resource and A/N resource.Additionally, conduct Above-mentioned A/N resource, is not limited to the specific PUCCH resource in PUCCH region 2 (PUCCH2), such as, can also use PUCCH Specific PUCCH resource (not shown) in region 1.

Terminal 200 at least in Pcell by both PDCCH region and R-PDCCH region are carried out blind decoding (prison Depending on), descending distribution control information (DCI) of this device is mail in detection.Further, terminal 200 (extraction unit 204) is based on mapped Descending distribution control information in any one in PDCCH and R-PDCCH, extracts down link data (DL data).By This, terminal 200 is received under each descending per unit band by least one descending per unit band of multiple descending per unit band Row distribution control information and down link data.

Then, terminal 200 (CRC unit 211) is in each descending per unit band, and descending point of this device is mail in detection use Join the presence or absence of the reception error of the down link data (DL data) that control information (DCI) is distributed.And, response signal generates The error detection result (presence or absence of reception error) of unit 212 down link data based on each descending per unit band, generates bundle Tie up ack/nack signal or ack/nack signal.And, terminal 200 uses the PUCCH of up per unit band to send response signal (ack/nack signal or binding ack/nack signal).Now, terminal 200 is according to the descending distribution mailing to this device in Pcell In any one that control information (DCI) is mapped in PDCCH or R-PDCCH, and the descending control at each descending per unit band Whether channel processed is assigned with descending distribution control information, selects the A/N resource for sending response signal.

Specifically, terminal 200 (control unit 208) as shown in Figure 16 A, in multiple descending per unit band, is passed through The PDCCH of Pcell obtains the descending distribution control information mailing to this device, and does not passes through other descending per unit band (such as Scell or SCC) obtain descending distribution control information in the case of, select and have mapped the CCE of this descending distribution control information (i.e. have sent the CCE of PDCCH) establishes the PUCCH resource (PUCCH resource in PUCCH1) of association one to one.And, Terminal 200 uses selected PUCCH resource, sends the sound for the down link data (DL data) received by Pcell Induction signal (ack/nack signal).

It addition, terminal 200 (control unit 208) is as shown in fig 16b, mail to this dress being obtained by the R-PDCCH of Pcell The descending distribution control information put, and do not obtained in the case of descending distribution control information by other descending per unit band, Select the A/N resource notified expressly in advance from base station 100.And, terminal 200 uses selected A/N resource, send for By the response signal (ack/nack signal) of the down link data (DL data) that Pcell receives.

It addition, terminal 200 (control unit 208) is as shown in figure 16 c, mail to this device being obtained by the PDCCH of Pcell Descending distribution control information, and in the case of also obtain descending distribution control information by other descending per unit band, Select the binding A/N resource notified expressly in advance from base station 100.And, terminal 200 uses selected binding A/N resource, Send the response for the down link data (DL data) received respectively by Pcell and other descending per unit band to believe Number through converging coding (Joint coding) and the binding ack/nack signal that obtains.

It addition, terminal 200 (control unit 208) is as seen in fig. 16d, mail to this dress being obtained by the R-PDCCH of Pcell The descending distribution control information put, and the situation of descending distribution control information is also obtain by other descending per unit band Under, select the binding A/N resource notified expressly in advance from base station 100.And, terminal 200 uses selected binding A/N to provide Source, sends the response for the down link data (DL data) received respectively by Pcell and other descending per unit band The binding ack/nack signal that signal obtains through converging coding.

Thus, base station 100 is as controlling example 3, it is possible to suppression is in order to ensure the ACK/NACK for down link data The increase of the A/N number of resources of the transmission of signal, and this down link data is the descending distribution by sending via R-PDCCH The distribution of control information, i.e. the increase of PUCCH resource expense can be suppressed.

It addition, although base station 100 notifies a binding A/N resource and an A/N resource expressly to terminal 200, but Terminal 200 uses this binding A/N resource and this A/N resource the most all the time in the transmission of response signal.Specifically, terminal 200 in the descending distribution control information by the PDCCH reception of Pcell, and under not received by other descending per unit band In the case of row distribution control information, the preferential PDCCH institute used and send this descending distribution used Pcell of control information The CCE taken establishes the PUCCH resource of association.That is, terminal 200 uses binding A/N resource the most when necessary, it is thus possible to Multiple terminal 200 is made to share identical binding A/N resource.Therefore, base station 100 is as controlling example 3, the simplest by carrying out Scheduling, it becomes possible to make multiple terminal 200 share identical binding A/N resource, and control the sound avoided from each terminal 200 The conflict of induction signal, it is thus possible to the increase of the expense of suppression PUCCH resource.

It addition, obtained the descending distribution control information mailing to this device by the R-PDCCH of Pcell, and do not pass through In the case of other descending per unit band obtain descending distribution control information, in controlling example 3 (Figure 15 B), terminal 200 uses bundle Tie up A/N resource and send ack/nack signal.That is, in controlling example 3 (Figure 15 B), the transmission to ack/nack signal distributes surplus Stock number.On the other hand, in controlling example 4 (Figure 16 B), terminal 200 uses A/N resource to send ack/nack signal.That is, exist Control the transmission suitable stock number of distribution to ack/nack signal in example 4.Thus, in controlling example 4, compared with controlling example 3 Relatively, it is possible to the expense of suppression PUCCH resource increases further.

Therefore, controlling in example 4, hardly the scheduling unit to base station 100 bring restriction and can be in multiple terminals 200 In share identical A/N resource and binding A/N resource, and preferentially use with the CCE shared by PDCCH of Pcell in advance Establish the PUCCH resource of association, it is thus possible to improve the service efficiency of PUCCH resource.That is, in terminal 200, DFT-is applied During S-OFDM form, even if in the case of have received descending distribution control information via R-PDCCH, it is also possible to efficiently send Ack/nack signal.

Additionally, in Figure 16 A to 16D, illustrate that terminal 200 only monitors the situation in R-PDCCH region in Pcell.But It is, even if in the case of the descending per unit band that terminal is beyond Pcell also monitors R-PDCCH, even if i.e. beyond Pcell Descending per unit band in also set R-PDCCH in the case of, it is also possible to apply the action of above-mentioned control example 3.

This concludes the description of the control example 1 to 4 for sending the A/N resource responding signal.

So, in any one that terminal 200 is mapped in PDCCH or R-PDCCH according to descending distribution control information (logical Which one crossed in PDCCH or R-PDCCH have received Downlink Control Information), from establish with CCE the PUCCH resource that associates with And from the specific PUCCH resource that base station 100 is prenoticed, select the resource for sending response signal, control response signal Transmission.By doing so it is possible, terminal 200 can be according to the kind (PDCCH and R-PDCCH) of down control channel or descending control The reception situation switching of information processed use establish with CCE the PUCCH resource associated and prenotice from base station 100 specific PUCCH resource.Thus, even if in the case of terminal 200 have received descending distribution control information by R-PDCCH, it is also possible to Prevent the scheduling in base station 100 from becoming complicated, and suppress the increasing of the PUCCH resource caused in order to ensure the transmission of response signal Add.

It addition, base station 100 controls in which one that information MAP has arrived in PDCCH or R-PDCCH according to by descending distribution (have sent Downlink Control Information by which one in PDCCH or R-PDCCH), from establishing the PUCCH resource associated with CCE And in the specific PUCCH resource that terminal 200 prenoticed, the resource that the transmission of Response to selection signal is used.By this Sample does, even if base station 100 is in the situation that terminal 200 uses arbitrary down control channel have sent descending distribution control information Under, it is also possible to determine which resource is terminal 200 use send response signal.

Thus, according to present embodiment, in the case of terminal have received descending distribution control information by R-PDCCH, Response signal can be efficiently sent.

(embodiment 2)

In the present embodiment, illustrate that certain terminal is sent for descending by same subframe (same transmission unit interval) The response signal of link data and the situation of uplink data.

The basic structure of the base station of present embodiment is identical with embodiment 1, therefore continues to use Figure 11 and illustrates.It addition, Figure 17 is the block diagram of the structure of the terminal 200 representing present embodiment.Additionally, in the terminal 400 shown in Figure 17, to reality Execute the structural element mark same symbol that mode 1 (Figure 12) is identical, and the description thereof will be omitted.

In the terminal 400 shown in Figure 17, control unit 208, in addition to the process identical with embodiment 1, is also being answered Send and the subframe of response signal (binding ack/nack signal or ack/nack signal) exists the data signal (transmission that should send Data) in the case of, the response signal after coding and modulation is exported perforation unit 402 by instruction coding and modulating unit 213. On the other hand, there is not, in the subframe that should send response signal, the data signal (transmission data) that should send in control unit 208 In the case of, as embodiment 1, instruction coding and modulating unit 213 are by the response signal (binding after coding and modulation Ack/nack signal or ack/nack signal) export DFT unit 216 or a spectrum-spreading unit 214-1.

Coding and modulating unit 401 encode sending data and modulate, by defeated for the data signal after coding and modulation Go out to perforation unit 402.

Perforation unit 402 from coding and modulating unit 213 input response signal in the case of, utilize response signal to from The part of data signal that coding and modulating unit 401 obtain carry out dredging between (punching), and will thin between after signal export DFT unit 403.On the other hand, perforation unit 402 not from coding and modulating unit 213 input response signal in the case of, will The data signal obtained from coding and modulating unit 401 is directly output to DFT unit 403.So, when sending response signal Subframe in there is the data signal that should send in the case of, response signal is assigned in PUSCH.

And, the signal inputted from perforation unit 402 is transformed to frequency domain by DFT unit 403, the multiple frequencies obtained is divided Amount output is to map unit 404.The multiple frequency components inputted from DFT unit 403 are mapped to and are configured at by map unit 404 In the PUSCH of row per unit band.Multiple frequency components that IFFT unit 405 will be mapped in PUSCH are transformed to time domain waveform, CP Extra cell 406 CP additional to this time domain waveform.

Select unit 407 according to the instruction of control unit 208, select the binding ACK/ from the input of time-multiplexed unit 220 NACK resource, from CP extra cell 219-1 input A/N resource or from CP extra cell 406 input PUSCH resource Any one, the signal being assigned in selected resource is exported wireless transmission unit 222.

(base station 100 and the action of terminal 400)

Base station 100 configured as described above and the action of terminal 400 are described.In the following description, as an example, with reality The control example 1 executing mode 1 is same, and the situation of carrierfree polymerization (Carrier Aggregation) is described.

Here, as shown in Figure 18 A and Figure 18 B, the base station 100 of present embodiment uses PDCCH region or R-PDCCH district Territory (the R-PDCCH region of the such as Slot0 shown in Fig. 7) sends descending distribution control information (Downlink assignment). It addition, base station 100 uses in PDCCH region or R-PDCCH region (the R-PDCCH region of the such as Slot1 shown in Fig. 7) transmission Row distribution control information (UL grant).It addition, base station 100 is sometimes in certain subframe, terminal 400 is being sent descending distribution Send uplink assignment while control information and control information.

On the other hand, terminal 400 carries out blind decoding (supervision) to both PDCCH region and R-PDCCH region, detection The descending distribution control information or the uplink assignment that mail to this device control information.

Now, terminal 400 is in the case of only detected the descending distribution control information mailing to this device, with embodiment party The control example 1 of formula 1 is same, uses PUCCH to send response signal.That is, terminal 400 is according to have sent descending distribution control information Down control channel (PDCCH or R-PDCCH), determines the resource (A/N resource) for sending response signal.

On the other hand, terminal 400 when detected in certain subframe the descending distribution control information mailing to this device with And in the case of both uplink assignment control information, in same subframe, i.e. to send the sound for down link data simultaneously In the case of induction signal and uplink data, such as, as in figure 2 it is shown, multiplexing uplink data in PUSCH region (Data) with response signal (A/N) be transmitted.

More specifically, terminal 400, as shown in Figure 18 A and Figure 18 B, controls when have received descending distribution in certain subframe In the case of information and uplink assignment control information, either pass through PDCCH reception and mail to the descending distribution control of this device Information processed (Figure 18 A), or the descending distribution control information (Figure 18 B) mailing to this device is have received by R-PDCCH, all use Same resource (the PUSCH resource in the PUSCH shown in uplink assignment control information) in PUSCH region sends response signal. That is, terminal 400 is as shown in Figure 18 A and Figure 18 B, uses of the PUSCH resource being assigned with uplink data (UL data) Divide (utilizing response signal that a part for uplink data is punched), send response signal.

So, terminal 200 only have received the situation of the descending distribution control information (feelings without uplink assignment control information Condition) under, as embodiment 1, it is possible to increase the service efficiency of PUCCH resource.It addition, terminal 200 is being controlled with descending distribution In the case of information processed the most also have received uplink assignment control information, do not use PUCCH resource, but use PUSCH resource Send response signal.By doing so it is possible, terminal 200 can control the presence or absence of information according to uplink assignment, reduce and send response letter The expense of number required PUCCH resource, and suitably send response signal.

Thus, according to present embodiment, as embodiment 1, have received descending distribution control in terminal by R-PDCCH In the case of information processed, it is possible to efficiently send response signal.

Additionally, present embodiment is not limited to the control example 1 of embodiment 1, it is also possible to be applied to the control of embodiment 1 Example 2 to 4 (situation of application carrier aggregation (Carrier Aggregation)).That is, terminal 400 mails to this only detected In the case of the descending distribution control information of device, can according to any one mode in the control example 1 to 4 of embodiment 1 certainly Determine A/N resource.

Above, the embodiments of the present invention are illustrated.

Additionally, in the above-described embodiment, as an example of the sequence for spread spectrum, ZAC sequence, Walsh sequence are illustrated Row and DFT sequence.But, in the present invention, it is also possible to replace ZAC sequence, use beyond ZAC sequence, utilization the most not phase The sequence that same cyclic shift amount can be separated from each other.Such as, GCL (Generalized can also be used in once spreading Chirp like, generalized chirp) sequence, CAZAC (Constant Amplitude Zero Auto Correlation, Constant amplitude zero auto-correlation) sequence, ZC (Zadoff-Chu, Zha Defu-Zhu) sequence, M sequence or orthogonal Gold coded sequence Deng PN sequence, or by the autocorrelation performance sequence jumpy etc. on the time shaft of computer random ground generation.It addition, Walsh sequence and DFT sequence can also be replaced, as long as mutually orthogonal sequence or can be considered the sequence being mutually substantially orthogonal Row, can be used as orthogonal code sequence by arbitrary sequence.In the above description, moved by the circulation of frequency location, ZAC sequence Resource (such as A/N resource and the binding ACK/NACK of the sequence number definition response signal of position amount and orthogonal code sequence Resource).

It addition, in the above-described embodiment, the control unit 101 of base station 100 be controlled with by down link data with Control information MAP in same descending per unit band for the descending distribution of this down link data, but be not limited to this.That is, Even if down link data controls information MAP to different descending unit frequencies from the descending distribution for this down link data In band, as long as descending distribution control information is clear and definite with the corresponding relation of down link data, it becomes possible to apply in each embodiment The technology illustrated.

It addition, in the respective embodiments described above, as the processing sequence of end side, illustrate to expand at once spread spectrum, secondary The situation of IFFT conversion is carried out after Pin.But, these orders processed are not limited to this.If the rear class a spread processing There is IFFT process, then secondary spread processing all can get the result of equivalence in any position.

It addition, above-mentioned embodiment is illustrated as antenna, but present invention is equally capable to be applicable to antenna port (antenna port)。

So-called antenna port, refers to the logical antenna being made up of one or more physical antenna.That is, antenna port may not limit In referring to a physical antenna, the array antenna etc. being made up of multiple antennas the most also can be referred to.

Such as, in 3GPP LTE, non-regulation antenna port is made up of several physical antennas, it is stipulated that can send for base station The least unit of different contrast signals (Reference signal).

It addition, antenna port is the most also defined as being multiplied by the weighting of precoding vectors (Precoding vector) Subsection.

Additionally, in the above-described embodiment, it is illustrated in case of to be constituted the present invention by hardware, but The present invention can also realized by software with under the cooperation of hardware.

It addition, each functional device used in the explanation of above-mentioned embodiment, it is typically implemented as integrated circuit I.e. LSI (large scale integrated circuit).These both can carry out single chip respectively, it is also possible to comprises a portion or complete Portion and carry out single chip.Referred to herein as LSI, but according to the difference of integrated level, it is also possible to be referred to as IC, system LSI, super large LSI, Especially big LSI.

It addition, the mode of integrated circuit is not limited to LSI, it is possible to use special circuit or general processor realize. FPGA (Field Programmable Gate Array, field programmable gate that LSI can program after manufacturing can also be utilized Array), the restructural that the connection to the circuit block within LSI or setting maybe can be utilized again to set up puts processor (Reconfigurable Processor)。

Further, if over the progress of semiconductor technology or the derivation of other technologies, occur in that replacement LSI integrated circuit The technology changed, naturally it is also possible to utilize this technology to realize the integrated of functional device.There is also the possibility being suitable for biotechnology etc. Property.

No. 2010-197768 description comprised of Japan Patent Patent of proposing for 3rd JIUYUE in 2010, accompanying drawing with And the disclosure of specification digest, all it is incorporated in the application.

Industrial applicibility

The present invention can be applicable to mobile device communications system etc..

Claims

1. termination, including:

Receive unit, receive the control channel including indicating the descending distribution information of the resource of the downlink data to community distribution, And receive described downlink data；

Signal generating unit, generates the response signal for described downlink data；And

Transmitting element, sends described response signal；

Wherein, it is contained in the control Channel Elements in physical downlink control channel PDCCH region when described descending distribution information Time in upper the first control channel sent of CCE, the first resource determined by first method is used to send described response signal, its In determine resource from the index of the CCE of described PDCCH region；

When described descending distribution information is contained in the second control channel different from described first control channel, use logical Cross the Secondary resource described response signal of transmission that the second method different from described first method determines.

Termination the most according to claim 1, wherein:

When sending the multiple response signals for the multiple downlink datas on multiple communities and for main little by Channel assignment When the descending distribution information in district is contained in described first control channel, use in the multiple resources including described first resource One transmission the plurality of response signal；

When sending the multiple response signals for the multiple downlink datas on multiple communities and for main little by Channel assignment When the descending distribution information in district is contained in described second control channel, use in the multiple resources including described Secondary resource One transmission the plurality of response signal.

Termination the most according to claim 1, wherein:

Splice form described many for the multiple downlink datas on multiple communities of transmission of multiple response signals when using to comprise When individual response signal and described descending distribution information are contained in described first control channel, use described Secondary resource Send the plurality of response signal；And

Splice form described many for the multiple downlink datas on multiple communities of transmission of multiple response signals when using to comprise When individual response signal and described descending distribution information are contained in described second control channel, use described Secondary resource Send the plurality of response signal.

Termination the most according to claim 1, wherein,

In described second method, independently determine described Secondary resource with the index of the CCE of described PDCCH region.

Termination the most according to claim 1, wherein,

In described second method, with the index of the CCE of described PDCCH region independently, send out based on from base station to each terminal The information of signalisation, determines described Secondary resource.

Termination the most according to claim 1, wherein,

The PDSCH region different from described PDCCH region sends described second and controls channel.

Termination the most according to claim 1, wherein,

When sending upstream data, the resource distributed for described upstream data is used to send described response signal.

8. communicator, including:

Transmitting element, sends the control including indicating the descending distribution information of the resource of the downlink data to community distribution to terminal Channel, and described downlink data is sent to described terminal；And

Receiving unit, receive the response signal for described downlink data, described response signal sends from described terminal；

Wherein, it is contained in the control Channel Elements in physical downlink control channel PDCCH region when described descending distribution information Time in upper the first control channel sent of CCE, the first resource determined by first method is used to send described response signal, its In determine resource from the index of the CCE of described PDCCH region；And

Communicator the most according to claim 8, wherein:

When sending the multiple response signals for the multiple downlink datas on multiple communities and for main little by Channel assignment When the descending distribution information in district is contained in described first control channel, use in the multiple resources including described first resource One transmission the plurality of response signal；And

Communicator the most according to claim 8, wherein:

The form transmission splicing multiple response signals is comprised for multiple sound of the multiple downlink datas on multiple communities when using When induction signal and described descending distribution information are contained in described first control channel, described Secondary resource is used to send The plurality of response signal；And

The form transmission splicing multiple response signals is comprised for multiple sound of the multiple downlink datas on multiple communities when using When induction signal and described descending distribution information are contained in described second control channel, described Secondary resource is used to send The plurality of response signal.

11. communicators according to claim 8, wherein,

12. communicators according to claim 8, wherein,

13. communicators according to claim 8, wherein,

14. communicators according to claim 8, wherein,

15. communication means, comprise the following steps:

Receive the step controlling channel including indicating the descending distribution information of the resource of the downlink data to community distribution；

Receive the step of described downlink data；

Generate the step described downlink data being responded to signal；And

Send the step of described response signal；

16. communication means, comprise the following steps:

The step controlling channel including indicating the descending distribution information of the resource of the downlink data to community distribution is sent to terminal Suddenly；

Described downlink data is sent the step to described terminal；And

Receiving the step described downlink data being responded to signal, described response signal sends from described terminal；

17. integrated circuits, are used for controlling following process:

Receive the control channel including indicating the descending distribution information of the resource of the downlink data to community distribution；

Receive described downlink data；

Generate the response signal for described downlink data；And

Send described response signal；

18. integrated circuits, are used for controlling following process:

Send to terminal and include indicating the control letter for the descending distribution information of the resource of the downlink data of distribution on community Road；

Described downlink data is sent to described terminal；And

Receiving the response signal for described downlink data, described response signal sends from described terminal；